Oakland PD is about to learn a very tough lesson. They are outnumbered, and they are on the wrong side. It's going to be very easy to overpower, disarm, and detain them. A mass citizens arrest of these shameful "public servants" will send a clear message to the ruling class.
The blowback from their recent conflicts with protesters will bankrupt the city, as they will be awash in civil and criminal lawsuits.
Using permits as justification for removal of protesters not justifiable, and is in violation of our constitution. You are not free to speak if you must first request permission.