I read that Poland has quite draconian drug laws. Such laws are what institutionalised racism is based on in the US - it comes from the premise that people from disadvantaged background will be more likely to be involved in drugs than other groups - this is of course not true, as person living on handouts is just as likely to take drugs as a rich person working in banking sector. It's what law enforcement is being focused on. I believe most western countries have this setup copied from the US and it is being used for oppression of groups that government deems undesirable.
If cops were the "good guys", they would investigate why certain politicians push drug prohibition, who profits from it and why police is being used to support it.
In my country if you are black, you are 6 times more likely to be harassed by law enforcement than if you were white, despite the drug use being at the same level.