IF you’re going to delete your comments (which I don’t think is necessarily a good thing, though it could be good for you individually) you should leave a message about why you left in their place. Make it into a protest.

(Those kinds of) protests aren’t for convincing the average person. The point of a protest is to tell the people in power “there are a lot of us, and you can’t afford to ignore us.”

You cannot do violence against someone else’s property.

You are property of the ruling class, and so they (or their henchmen) are free to damage you.