And that is the essence of the "spiral of silence", because everyone stays quiet about it, then the problem never gets tackled by the community. It's precisely

And that is the essence of the "spiral of silence", because everyone stays quiet about it, then the problem never gets tackled by the community. It's precisely how totalitarian regimes work. We should all make a considerable effort to gather as much evidence as possible, so it can be forwarded to law enforcement for investigation? We have audio recorders, covert body cameras, you name it, they are all readily available and inexpensive nowadays (assuming it's legal to do so, which depends on the jurisdiction).