In some areas, the cops are in league with the violent counter-protesters, which is why they watch them assault law-abiding people and do nothing about it:

...dozens of police looked on, in some cases chatting and sharing pizza with the group. They included Officer Joseph Goodwin Jr., whose brother Richie shoved one protester and was photographed punching another. [0]

Maybe it's the same thing with the looters.

0 - https://www.inquirer.com/news/fishtown-philadelphia-communit...