You're posting misinformation. Tear gas is deployed when mobs surge in direct violation of orders not to, or to control violence and criminality by large crowds. Your attempt to frame it as "cops attacking peaceful onlookers" is in conflict with the evidence available.
Aljazeera is pretty good with unbiased coverage, and it doesn't lay the blame one way or the other [0]. It just says "(LAPD) declared the area an unlawful assembly, deployed tear gas, issued tactical alerts and made several arrests."
I would still read that as the cops fired first.
https://www.aljazeera.com/news/2025/6/11/how-the-los-angeles...
Given the mountain of evidence of criminal damage, we can assume the declaration came after evaluating the scale of criminal behavior. Reading that as "cops fired first" sounds like cognitive bias.
And the whole point of a protest is that it is defiance of authority. Having a protest declared "unlawful assembly" is kinda the point.
I'm curious what you saw from the "No Kings" protests from your point of view? Were they also unlawful, with mountains of evidence of criminal damage? The organisers estimate that 11 million people attended 2000 different locations around the USA, and it was almost entirely peaceful. What are you being told?