Every time the Screamers try to take over an event, all the Adults in the room should just stand up and start reciting the Pledge of Allegiance.
They wouldn't dare scream over it. Do it over and over again so they know that the people in the room are deadly serious about having the discussion.
Bento's diary suggested singing a song - which I think is a pretty good idea, except they love pointing out how we Libruls get all flowery and all.
The Pledge of Allegiance is serious stuff.
Do it over and over again until they get the message: Stop Pissing on Our Flag.
Recite and respond, "We are all adults in the room. We are all Americans. Stop pissing on our Flag!"
Every time they interrupt, start reciting it over again.
How would Billo, Rush, and Beck respond to that?
Just like in grade-school, these bullies wouldn't dare interrupt the Pledge of Allegiance...and they would clearly understand how serious we are about having the discussion.
And, like in grade-school, The Pledge of Allegiance was part of the daily routine that indicated it was time to get serious and get to work.
Keep doing it and they will eventually get bored of looking like such asses.
Let Fox choke on that one.