The Baltimore PD's Gun Trace Task Force has come under investigation for some really shady shit.
It all started back in 2011 with the death of a woman due to an overdosed. After investigating of where she got the drugs, it was discovered that one of the people that was helping with the group that was distributing drugs was a police officer that was a part of the gun trace task force, which eventually led to 7 more members of the task force being indicted aswell for racketeering but are also accused of executing searches without warrants, invading private homes, robbing suspects and innocent citizens of cash and reselling drugs on the street obviously.
You're probably thinking damn these are some pretty shitty cops, no way this could be worse. Yeah so about that, during one of the trials it was revealed that officers were directed by Sargent Wayne Jenkins to carry a toy gun in case "we accidentally hit somebody or got into a shootout, so we could plant them." Which is problematic considering 86 people were killed including Tamir Rice and a 13 year old for allegedly carrying a toy gun.
Things like this is why certain communities don't like cops, and I know that this is just a few bad people and the majority of cops are decent people but the thing is a bad cop has far worse ramification then a good cop.