New details have emerged about the history between George Floyd and his killer, former police officer Derek Chauvin. According to a former co-worker, Floyd and Chauvin "bumped heads"when they both worked as security at a nightclub in Minneapolis.

Co-worker David Pinney said the former officer knew Floyd very well and the two "bumped heads." He said there was a friction between them because of the way Chauvin treated the patrons. 

"It has a lot to do with Derek being extremely aggressive within the club with some of the patrons, which was an issue,"  Pinney told CBS News.

Maya Santamaria, the former owner of El Nuevo Rodeo, said the two security guards worked together on Tuesdays, which was a popular night at the venue featuring dance competitions. The former club owner added that Chauvin had a problem with Black people.

"I think [Chauvin] was afraid and intimidated," she said.

Santamaria also talked about the connection between the two men in an interview with KSTP.

"Chauvin was our off-duty police for almost the entirety of the 17 years that we were open," she said. "They were working together at the same time. It's just that Chauvin worked outside and the security guards were inside."  

The Floyd family is hoping to bring a first-degree murder charge against the former Minneapolis officer.

"Because we believe he knew who George Floyd was," the family said. 

Officers in other recent cases of police violence have also been accused of abusing their powers. In the case of Breonna Taylor, a Louisville EMT who was killed by police in her home, one of the officers involved in the shooting was accused of previously planting drugs on an innocent man.

The officer, Brett Hankison, was named in a 2019 federal lawsuit for allegedly harassing Kendrick Wilson, as Blavity previously reported. According to the lawsuit, Hankison had arrested Wilson multiple times for no reason, including in 2018 when the officer allegedly planted drugs on the innocent man. Hankison and Wilson had dated the same woman. The two men had known each other since 2016 when Hankison worked as a security guard at a bar Wilson would often visit, the lawsuit states.

Former Baltimore officer Larry Smith shared an essay on Medium in 2018 in which he explained the amount of power abuse he saw and contributed to during his career.

Smith said "making the transition from civilian to cop was overwhelming" and he "wasn’t accustomed to exerting any type of authority."

"I was given the power to take away someone’s freedom and the instruments to take someone’s life," he wrote. "At the police academy, we were taught the basics of the job: driving, firearms training, report writing, and self-defense tactics. The academy did not teach us the fundamental difference between power and authority or how to judiciously apply either."

The former officer said he and his colleagues would give unlawful orders to innocent people in the streets and threaten them with arrest if they didn't comply. 

Smith also detailed the corruption that was exposed after the death of Freddie Gray. 

"The Department of Justice investigated the Baltimore Police Department and released a scathing report detailing the rampant abuses of power and constitutional violations by its officers, including the use of excessive force, illegal stops and searches, and the targeting of African Americans for enforcement," he wrote.