Actually, in some jurisdictions, they may very well have been charged with disorderly conduct...
I am surprised that they weren’t...
I do not believe they are idiots, they are making a statement, and since we kinda have that pesky little First Amendment, they were obviously backing it up with the Second Amendment...
All intents aside of course...
Just my opinion...
Many decades ago was a 13 year old carrying a WWII era militry bolt-action rifle on my shoulder on a sling as I walked through town. I was on my way to my friend’s home on the edge of town, where we were going to do some target shooting. The rifle was mine, given to me by a relative who captured it from a prisoner of war. I couldn’t put the rifle in a case, because I was a teenager without that kind of money. I had to walk through town because I was too young tto have an automobile and drive. The streets and sidewalks I had to travel eventually ttook me along side of a state highway. The folks I met along the way waved a friendly hello to me. The State Police officer waved a friendly hello to me as he drove by on the highway. No one screamed and ran away in fright. No one called the Sheriff. It was all normal as normal can be.
Today, because there are people who assume it must be idiotic for an adult , much less a teenager, to walk through town with a rifle slung on their shoulder, the person carrying the rifle is placed at serious risk and the pulic safety is degraded. It should make us all who the idiots are, the people exercising the right to keep an bear arms or the people who fear the carrying of those firearms.