First off the police are people that care deeply for the community and protecting the citizens. Just because their are few bad apples like these terrible cops in this article doesn't weaken the greatest the police do. These stories showcase the extreme examples of corrupt cops and what they did.
No Boundaries

“A Boston police sergeant who was a paid informant for the local representative of the Cali, Colombia, drug cartel. Since the sergeant worked in Vice, he knew who was being investigated from violations of drug laws and whenever one of the Cali Cartel people came under investigation, he would tip off his contact and that person would disappear, often re-appearing in Colombia. (We nailed him because he couldn’t figure out how to hide his extra income. The boat he bought that cost more that his police salary gave him away.)” (Source).
Pile On The Drug Charges

“Four Boston police officers and three Suffolk County Sheriff’s Deputies who would stop a suspected drug dealer – If the suspected dealer had drugs on him, they would add additional drugs that they had taken from the precinct’s evidence room to the ones the dealer had in order to get the dealer a longer prison sentence (a custom known at that time as “sweetening”.). If the suspected dealer had no drugs on him, they would plant drugs that they had taken from the precinct’s evidence room on him or her and arrest them. There was a policy in both the Boston Police Depart and in the Sheriff’s office at that time that, in order to be considered for the sergeant’s exam and possible promotion, you had to show on your record a certain number of arrests. So they padded their arrest records by falsely arresting people on drug charges. (We solved the case by using an undercover DEA agent from out of town who pretended to be a drug dealer. He was arrested, the arresting officer “sweetened” the drugs on him by adding additional drugs and, when that cop was arrested, they confessed and identified the others in the fake drug arrest ring.)” (Source).
Steriods

“At my university a female classmate of mine asked if I had just returned from the gym before class (perhaps she could tell from the chicken breast in tupperware). We had previously had a conversation a couple weeks back where she disclosed her boyfriend was a cop for the city the next town over. After some chit chat about the gym she told me her boyfriend sold steroids and if I ever needed anything to help me get big let her know because they have it. In addition to selling steroids she also told me he sells drugs for below market rates because he gets them for free when he pulls someone over. Of course I declined both offers for multiple reasons. 1. Chicken and rice is the only steroid I need. 2. I don’t do drugs. 3. If I did I would not purchase them from a cop” (Source).
Rule Breaker

“I’ve known a hundred plus LEO’s and don’t think of any of them as corrupt although the friend who’d worked Internal Affairs found a number of them he investigated to be corrupted. A Police Chief I knew of but never met systematically dismantled and disbanded every effective tool for drug crime investigation (joint drug task force, drug dogs, sting operations, etc.) after each had proven themselves unusually effective in his city which doesn’t make any sense (the programs more than paid for themselves too) for someone trying to do their job. A Sheriff in region managed to afford a helicopter, small plane, multiple new vehicles, etc. on a $35,000/yr salary at the time (which wouldn’t cover the helicopter’s operating costs.) A U.S. Marshal, the political appointee, was arrested a few years ago with substantial amounts of cocaine in his vehicle. A nearby County Attorney was convicted for participating in an 80-person cocaine distribution ring by the local Sheriff. Hadn’t met any of those guys, did meet successors or predecessors” (Source).
Double Duty

“A Chicago police officer labeled as the most corrupt cop. He served as both police officer and drug kingpin using his knowledge of the streets and gangs to shake down drug dealers. For most of his career, he would run the Gang Unit, while running his own drug gang at the same time. He would be convicted of 10 counts including drug conspiracy and racketeering in 2001” (Source).
Big Pay Day

“In San Diego, a former US Homeland Security Investigations agent was indicted on charges he stole hundreds of thousands of dollars in cash from drug money couriers and tried to hide the money via real estate transactions in American and Croatian banks. He was a former agent who worked on Homeland Security’s Bulk Cash Smuggling Taskforce, which targeted Mexican drug trafficking organizations and participated in at least 20 major cash seizures, but is accused of conducting searches and seizures without reporting them. He and his wife made at least $1.2 million in cash deposits over a four-year period. He faces money laundering, bank fraud conspiracy, false statements, and structuring financial transaction charges. He’s out on bail” (Source).
Side Job

‘In Miami, a former NYPD officer pleaded guilty to traveling to Florida and providing security for a $200,000 cocaine deal that turned out to be a federal drug sting. He copped to one count of drug trafficking conspiracy. He’s looking at 10 years to life in federal prison” (Source).
Verbal Warnings

“When I was young and reckless and living on the northwest side of Chicago I had a friend who’s father was an officer for the Chicago PD. His mother was often quite fond of cocaine. He was the guy we’d buy our pot and pretty much any other drug (excepting coke, because of the above reason). He didn’t grow it, or buy it from a bigger dealer. Nope, he would pull over any vehicle packed with youths in it that he suspected might have narcotics in it. He’d search the car and find drugs. And sometimes not just a few roaches, sometimes a few kilos. Those kids went to jail right? Nah. He would ‘confiscate’ the illicit items, give them a ‘verbal warning’ then let them go on their way. Then he’d stop by their house and drop it off. And it wasn’t just drugs! He had the most amazing ‘nose’ for finding people that were doing shady things. As such, beyond copious amounts of free drugs, he would also have large caches of: Alcohol, from underage drivers Fireworks, as they are illegal in the state (they threw the most amazing 4th of July parties with some of the craziest pyrotechnics I’ve ever seen) Money, from outright bribes to envelopes of cash Electronics, like laptops, stereos, etc Firearms. Like, an arsenal worth. Tons of leather goods. Like biker jackets and the like (things that are often stolen and easy to flip since there’s no serial numbers and such) Rumored, sexual favors from pretty young girls who don’t know any better. As young punks we viewed him as our narcotic Robin Hood. There was never a time we couldn’t run over there and come back with a bunch of drugs and other random stuff like amplifiers, stereos, etc. All at rock bottom pricing. Back then I didn’t feel there was any harm in it (turns out my moral compass was broken from the factory, always pointing South. I had it fixed in my late 20s) but if the same thing were to happen today I’d be mortified. An authority figure blatantly taking advantage of those he’s charged with “serving and protecting”? Do not want. I’m 40. I was a lawless punk for many years. I’ve seen, and experienced, the entire gambit. But I’m still very respectful of the police and know that the vast majority don’t abuse their powers, but the ones that do seem to go above and beyond” (Source).
Walter White

“In Birmingham, Alabama, a former Winston County sheriff’s deputy was sentenced to nearly four years in federal prison for threatening a woman with an arrest warrant unless she agreed to cook meth for him. He also supplied the woman with the precursor ingredient pseudoephedrine, which he stole from the department evidence room. He copped to one count of manufacturing meth on a premise where children were present” (Source).
Double Agent

“Two officers worked for the NYPD but in reality, they worked for the mafia. They were members of the Organized Crime Homicide Unit investigating the very people he was working for. They were taking orders for certain crime families and served as hitmen as well as moles in the NYPD. They were convicted of racketeering, obstruction of justice, extortion and eight counts of murder and conspiracy” (Source).
Traffic Cops

“I grew up in Moscow, and in early oughts, when Russia was still regaining balance from not being a part of the USSR anymore, the police was in disrepair too. A glaring manifestation of that were traffic cops. As a kid I actually had no idea that if you are stopped for speeding or anything a protocol has to be filled out and a fine needs to be paid elsewhere. I though a fine is something you pay directly to the officer on the spot, because I don’t think I ever even heard of it done differently. It was the default option. Everyone did it. I don’t think the alternative was even brought up a lot of the time. It is petty corruption, but it used to be everywhere. These days things are different. Hardly anyone ever hints at this kind of ‘pay off’, and when someone does it is not perceived as an everyday commonplace occurrence anymore. I am so impressed by how the system and peoples’ mentalities transformed” (Source).
Undercover Cops

“In Niagara Falls, New York, a former Niagara Falls police officer was arrested last Tuesday on charges she sold cocaine to undercover cops. She and her boyfriend, and another woman were all arrested on cocaine and marijuana sales charges. She had been on leave since an initial arrest last month, but has now resigned from the force” (Source).
False Confessions

“A former Chicago Police Department detective oversaw the torture of hundreds of Black men resulting in false confessions between 1972 and 1991. He would burn suspects with radiators and cigarettes, and electrocute their testicles. Although he was protected by the statute of limitations for his crimes, he was convicted for lying about the torture in January of this year” (Source).
The Smuggler

“In Lebanon, Ohio, a former Warren County jail guard was sentenced to nine months in prison for taking money to smuggle drugs to inmates. He went down when he was caught bringing a package of marijuana wrapped in duct tape to work with him. He then confessed that he was taking bribes to do so. He pleaded guilty to a third-degree felony charge of conveying prohibited items into a detention facility” (Source).
Jail Guard Conspiracy

“In Las Cruces, New Mexico, a former Dona Ana County jail guard pleaded guilty Tuesday to plotting to distribute heroin, cocaine, and meth within the jail. He copped to conspiracy to distribute narcotics and providing contraband in a prison facility. He’s now looking at up to 20 years in federal prison” (Source).
The Narcotics Conspiracy

“In Miami, a former Miami-Dade police internal affairs lieutenant pleaded guilty Tuesday to working with cocaine smugglers to smuggle guns through airport security. He worked in the department’s internal affairs division, but helped cocaine smugglers get guns through Miami International Airport. He also helped plot the execution of two rival drug dealers, provided secret intelligence to the group, and suggested ways to better smuggle dope through the city. He copped to three counts, including aiding and abetting a narcotics conspiracy and is now looking at 10 years to life in a federal prison” (Source).
The Planner

“In Titusville, Florida, a former Titusville police officer was sentenced to 10 years in federal prison for arranging drug deals. He is a five-year veteran of the force admitted to giving out information on his department’s drug investigations to traffickers in return for cash. He was convicted in January of attempting to aid and abet the distribution of cocaine, possessing a firearm in furtherance of drug distribution, and using a telephone to facilitate drug distribution” (Source).
Consequences

“In Houston, a Jefferson County jail supervisor was convicted of taking bribes from a jailed Mexican cartel leader. He was found to have initiated contact with Gulf Cartel leader, who was there pending trial on federal drug trafficking charges, offering him a cell phone in return for a cash payment. He provided a cell phone, as well as fast food, to the Gulf Cartel leader who went down when prison authorities found the phone weeks later and traced it back to him. He was found guilty of providing a prison inmate with a prohibited object and bribery of a public official. He’s looking at up to 15 years in federal prison” (Source).
The Hurricane Katrina Cover Up

“Members of the New Orleans police department during Hurricane Katrina were charged with first degree murder for killing a teenager who was innocent and unarmed during Hurricane Katrina on the Danzinger bridge. The teenager was simply looking for shelter in the Hurricane and cops pounced on him. The cops were found guilty of falsifying reports and false prosecution in the conspiracy to cover-up the shooting and may face the death penalty” (Source).