SJS:
I’m not saying it does make it “right”. Right is a very subjective word. All I am saying is that (as I have said before) some (I think most) people are willing to break the law for their cause. If this is their cause, and they are willing to go to jail for it, then it (to a certain extent) changes the action from vandalism to a protest.
I agree with you that the concept is probably foreign to these bochrim, and they are doing it for “shtick”, as a dare, or (least likely) “growing radicalism on Orthodox Jewry”. But hypothetically, the concept of “civil disobedience” does and should exist, and the law is not the end all. I hope we all would have sat with Rosa Parks, or walked from Selma, even though it was “illegal”. If these bochrim were really doing what they did as a protest against the lack of Tznius on the billboard (which I did not see), and would pay damages, etc. to H&M, then OK, but they have failed miserably at that.