Not exactly a slow roll, recently a group of my friends engaged in a sit-in, and the police beat them then charged them with resisting or obstructing causing injury, a 5 year felony because despite not resisting the officers complained of soreness after beating them.

I just want to say the police are almost universally monsters, and if you find yourself on a jury where someone is accused of violence against the police, consider not convicting, since the police are probably either lying or the accused acted in self-defense.