They don't want to risk being cancelled.
Like this guy:
https://www.newsweek.com/shooting-police-officer-protest-wisconsin-black-lives-matter-1523915
"On August 8th, 2020 at approximately 8:05 PM, a large group gathered in the area of N. 100. St. and W. Vienna St. in the City of Wauwatosa. The group, estimated to be between fifty and sixty people, targeted the private residence of Wauwatosa Police Officer Joseph Mensah and began to vandalize the home," said Wauwatosa Police Department in a statement.
"Officer Mensah attempted to establish a dialog with the group but was ultimately physically assaulted outside of his home. As Officer Mensah retreated into his home, armed protestors approached the rear door and a single shotgun round was discharged by a member of the group into Officer Mensah's backdoor."