I agree bad things have happened under Trumps's watch, but most of those bad things are happening because Democrats incited it or allowed it. Under our Federal system, it is local government that has primary responsibility for law enforcement. It was the job of the Mayor of Minneapolis to stop the first riots, not Trump. When Trump offered to help, the Democrat Mayors refused and then kept watching abjectly as mobs rampaged through their streets, torched their cities, and set up lawless protest zones. The Democrat officials then started to actually defund the police and wrung their hands as crime exploded.
I do agree with you all people should be treated fairly and humanely by the police. When a police officer violates the law and responds with excessive violence, then they should be investigates and appropriate charges filed, and the judged by a jury and, if found guilty, sentenced to punishment commensurate with the offense. Some people apparently believe rioting in the street or walking off with a case of whiskey or a high-end pair of running shoes aids the cause of racial fairness in the justice system. I don't. Do you?