If you think tear gas is going to kill people then how about an air-horn so it can be noticed when someone is stealing your private property and infringing on the right to free speech?
Or is there something you want to nit-pick in my direction (rather than the perpetrators) about that too?
Lawyers in the US have to be experienced to be believed.
Of course, I hope that you would never experience one.
Every bullet you may ever fire, in the US comes with its own lawyer. Sometimes two.
A cop defended himself in a bar. Fellow went after him with a bottle, broken glass. Bad guy shot. Good guy went to jail for 7 years: Manslaughter.
Some tear gas projectors use a burning gas generator that can cause a fire.
Does the bad guys deserve anything you can do to them? No doubt they do. What they deserve isn't what my post was about.