I guess the point of my argument isn't about whether you should or shouldn't condemn the specific action, but whether it should or should not be legal and, if not, what the punishment should be. That, at least, should be consistent, because the government response should be proportionate to the inconvenience, so if you believe your cause outweighs the inconvenience, then it should also outweight a proportionate response.

One especially helpful mental trick is to imagine you actually believe what someone you disagree with says that they believe. For example, I don't believe that actual lizards control the country and systematically rape children, but if I did... Well, obviously that belief would justify quite a lot.