There is no guarantees in life. Some law enforcement officers are dirtier than the criminals they arrest. Some use their badge to help themselves, not help the public. Some gang members joined the police department just to help the gangs out. There are dirty cops, and its impossible to weed them all out. They are good at what they do. There are corrupt cops, corrupt lawyers, corrupt judges, corrupt city councilmen, corrupt teachers, corrupt bankers, bakers, and candlestick makers. You can't stop it.