forbidding people from wearing masks except for specific cultural reasons like Halloween costumes, etc. These are ostensibly directed against masked robers, but the true reason was to curtail protests and other political activities by the Ku Klux Klan: https://en.wikipedia.org/wiki/Anti-mask_law

The HK violence could not possibly have occurred in the United States, because they would have been crushed by the police long before reaching this condition.

All should keep in mind that the actual target of the US-backed violence is Taiwan not Hong Kong.