Wasn't lack of civility in public discourse the scourge of our collective humanity in our parents' generation when they were using weird beat nick/hippie slang?Frankly, I'm pretty concerned with how unruly our public discourse is becoming.
I think blaming "the media" is a cop-out, as they're only responsible for their content. We are responsible for our response to that content. We are also responsible for our acceptance of said content. I think, were we a more discerning public, we wouldn't have half of the problems that we do with information manipulation.
Bad ideas are bad ideas, and I'm a champion for discussing them, even to the point of raised voices. But civility and decorum go a long way in helping to change the minds of those you disagree with, especially on emotionally touchy subjects.
In logical and formal debate, the cardinal rule is to always address the idea being presented, and not the presenter, their baggage, or external, non-presented topics. Fallacies are always fallacies, even if you're filled with copious amounts of righteous indignation.
Although I am curious as to what you define as "bad ideas."