Maher has a Constitutionally guaranteed right to say pretty much any thing he wants, presuming it's not willfully slanderous.
That being said, he does not have a Constitutionally guaranteed right to a television show, sponsors, or viewers.
So sorry you can't wrap your mind around that...business is business, and if his foolish blatherings pissed over a bunch of viewers and sponsors, they are free to NOT support or listen to his foolish blatherings any further. "I'm sorry" just doesn't cut it anymore.
As for McCarthy...check your facts, young man. After the fall of the Soviet Union, several books were released proving that MCCARTHY WAS RIGHT.
Yep...MUD
It is our duty to stand by Maher, to stop people from running his character into the ground. Half a century ago, Americans stood idly by while Joe McCarthy ruined the reputations
....FWIW, I posted this a while back:
Tailgunner Joe--Patriot Whistleblower or Right-Wing Witch-hunter?