If they get really uppity, there's OC pepper balls and, better yet, pepper foam. Very nasty.
And that's all just for starters.
I believe riot control has progressed nicely since 1968.
I'm with you on this one. Gas and rubber bullets and if injury is imminent for a police officer which would be caused by one of these low life's I say shoot them. If they want to be disruptive my garden needs weeding and plowing! Damn the IDIOTS!!! To protest in an orderly fashion is one thing but to endanger life and limb means the perpetrators must be dealt with strongly. There is no gray area when it comes to this.