in mexico we do, the police are as likely to rob you as any criminal. though it's not technically a robbery, it's actually extortion; they look to create a scenario in which they can extort a bribe out of you; i.e. they try to get you to bribe them (to the point that if you are willing to waste the rest of your day and go the the 'police station' they often just drop it and let you off with "a warning"). it's essentially same as a robbery but they're wearing uniforms.
BS civil forfeiture cases are pretty common.
Yes. The only difference is that in the US they give it a legal-sounding name of civil forfeiture and the courts protect them.
If you're an American resident, you really don't know of the privilege you have, even with your police at their most mediocre. Sure, they could improve enormously and some departments or officers are deeply, dangerously corrupt, but for the most part, in most places, they're at least not actively criminal in their conduct. Here they are, with rare exceptions to the contrary, even for very basic public security responsibilities.
Just two weeks ago in my city a woman known to my circle of friends was beaten and threatened with murder for no reason other than parking next to a patrol vehicle and being questioned by the officers about whether she'd been drinking or not (she hadn't, she was just on her way home and wanted to buy some snacks at a store). This isn't even close to an isolated case. It happens with a frequency that goes way beyond the typical among U.S. police departments of any kind.
This isn't to shit on Mexico, I love this country in many ways and police corruption is equal or worse in many other countries, but perspective is important if you're living in the U.S.