[gohrt]

There's a difference between " shouting down contrarian or critical viewpoints when a discussion could be initiated" and "shouting down people who are rehashing tired old arguments that looks exactly the same as the arguments put forth by people who are already known to be operating in bad faith"

[MrZongle2]

I would counter that a) perhaps some parties don't know that they're using "tired old arguments" (if it is new to them) and b) the "bad faith" may be assumed, rather than known.

If you're being shouted down, regardless of why one party thinks you should be shouted down, your worldview and opinion of the opposite party will be strongly affected.