The activist is well known. They likely knew he would answer the door, yet they still broke it down. In the U.S., you'd probably shoot some dog in that situation, if one was available.

The entire scene is probably not meant as effective policing, but as punitive theater. This also explains why they disabled the cameras, as the theater was not intended for content reuse.

Given that, I'd assume they knew he wouldn't shoot them or do anything even remotely like that.