Bragging on FB about how you plan to disrupt the event, showing up with intent to do harm (e.g. bringing a firearm and pepper spray), and carrying out an attack on those who you disagree with, is not only "not wise", it's premeditated criminal action. 

 The lawyers who represent these sorry individuals are worse yet. It's like seeing a bee's nest, deciding to go poking around, getting stung, and then destroying the nest because you know... self defense and all. Gimme a break.