Filming serves no purpose. In better times, it served a legal purpose: if they accused you of doing something during the interaction that you didn't do, you could prove your innocence. This will no longer help you, since they're perfectly happy to arrest you anyway, and put you in front of a jewish kangaroo court where facts don't matter.

It served another purpose: the video could prove that they did something illegal, which they might get in trouble for. Or it could get evidence thrown out of court. But it doesn't help here either. If the video contained something incriminating against them, they'd just destroy it. You'd never see it. And even if it leaked, nothing would come of it. The jewish kangaroo court would suppress the video and declare that the search was legal, and the evidence they planted on you admissible.

There was a third purpose: to generate public outcry so people do something about it. But the something that people do invariably involves strongly worded letters. Or if you're lucky, it goes viral and a few YouTubers make a lot of money off of showing a heavily censored version of it.