[castis]

Why are those 4 things unacceptable?

Historically, governments respond promptly to those things.

[tambienben]

You lose the moral high ground once you practice any one of those--at which point you're actively undermining your own message in the public eye.

Hell, your opposition will probably be accusing you of those things (or planting people who carry them out), anyway. Best not to cross that line.

[pc86]

Are murder, assault, theft, and vandalism acceptable to you?

[notzorbo3]

If you do those things to a force invading your country, sure. For protests, no.

[pc86]

Well we're talking about protests.

[PhasmaFelis]

Typically they respond by doubling down on whatever you're trying to get them to stop doing.