Bad laws should not be enforced. The deeper issue of malum prohibitum laws is that they must be enforced with legal, but malum in se, crimes against people who have themselves violated no one.
The benefit of the doubt, and presumption of innocence, belongs to the victims of police violence, not the police themselves. One of the few possible advantages to Trump was his lack of ties to the police system like Harris the Prosecutor had, but that's down the toilet now for Mango Mussolini.