In 2015 when John McCain was the Chairman of the Senate Armed Services committee, he called protesters, exercising their first amendment right of free speech, "low life scum" and threatened to have them arrested if they didn't get out of his hearing.
With this behavior, McCain presaged Donald Trump's bullying and abusive behavior in American government activities
Senator McCain's behavior toward American's right to free speech at a Senate Armed Forces Committee hearing violates the Unitarian Univeralist fifth principle of the right to conscience and the use of the democratic process.
The video clip is from Democracy Now! on 08/27/18.