Well, the Constitution might stand in their way.
At my weekly group I attend in San Antonio, a liberal frenemy told me how proud she was of the children marching today. I told her they were ill-informed and there are plenty of gun laws already, that our rulers failed to stop a mental case in Florida, and the government reporting system failed in the Sutherland Springs case, and that the children were focused on the wrong problem. She shut up. ^-^