Just because something makes you feel bad for society doesn’t mean the actions at an individual basis are purely malicious or unreasonable.
There’s been an unbelievable amount of violence perpetrated by police these last few weeks. You cannot stand by this argument if you’ve been watching the footage.
There’s no way you can say with a straight face that the police have committed more acts of violence and destruction than the rioters.
Our taxes pay their salaries, and our taxes also pay their legal settlements and fees when they get caught up killing unarmed black men and women. They live in a system fundamentally devoid of accountability. They deploy tools like tears gas and poorly tested “less lethal” ammunition that still has the ability to permanently and critically injure targets. No amount of violence against peaceful protestors should be tolerated. The police exist to protect the public, not treat them like enemy combatants.
If a crowd of 1000 people has one person throw a brick at the police. I think it’s well within their rights to tear gas the entire group to disperse them.
This is an utterly unethical and immoral point of view. If one person commits a crime, a group should never be punished for it. This is collective punishment, and it (along with tear gas) is prohibited under the Geneva conventions.
The tear-gassing specifically isn't to punish anyone. It is because their commanders think the situation is unsafe and that order needs to be restored. The crowd, by its presence, is creating a safety hazard where people might assault the police.
There are very fine lines involved, but there is a point where there isn't a reasonable expectation that the police should break ranks and move into a potential violent mob to arrest an individual. That would be asking them to take on too much risk. It isn't going to violate the Geneva Conventions.
At the end of the day, their actions are what matters, not their intent. If they harm you, someone not participating in the action they intend to lawfully suppress, then their action was an overreach.
What if we were talking about bullets, instead of gas? We’d never assert that indiscriminately firing into a crowd is warranted. Just because tear gas isn’t (often) lethal doesn’t really make it different; it’s an indiscriminate, unjustified use of force against arbitrary groups of people.
You’re right, of course, that there are limits and we wouldn’t expect the police to take on unlimited amounts of risk, but don’t get too lost in the theoretical here - the protests are not unruly mobs and are not anywhere near they hypothetical levels you’re talking about.