While I share the welling up of bile you are experiencing, a cause celeb trial is not the platform. Our power is in our superior numbers, ethics and vote.
When the law is an ass, you need to change the law. Something along the lines of a federal gun control law focused on appearing armed at political rallies with intent to incite.
I believe a burden shift would work. Make it a low class felony, even without firing a shot.
"Any person who attends a political protest or rally with a hand gun gun, semi automatic or automatic gun or rifle or dirk or dagger, not otherwise privileged at law to possess same, is presumed to harbor the specific intent
to incite violence, which presumption can only be overcome by clear and convincing evidence to the contrary." Violation of this law is punishable by imprisonment not less than 1 year. "
There, took two minutes to draft, having a gun at a rally = felonious incitement
A trial putting that asshole in the can has no precedential value. A law makes that change you desire. I'm just tolerating their deplorable endzone dance.
Two people are pushing up daisies because of that kid and they are gleeful.