Friends, there comes a time in everyone's life when they can no longer sit quietly and say nothing. Sometimes, a man's got to take a moral stand, even though it may not be popular and even though it might get him into trouble. Today, my friends, is that day. I won't stay silent any longer. I believe that cancer is bad.
This is a trope for when characters are treated as brave revolutionaries by the other characters in the work for stating the obvious: that Eyepatch Q. Blackheart is a bad man, that the Nazis were evil, that cancer is bad, etc. Can also apply to situations or things instead of people.
The important part of the trope is the reaction of others. This isn't about the work's moral message, it's about a character being treated as brave for making statements that are completely in line with the majority opinion around him.
Obviously there's Truth in Television
Also, I can't think of any examples right off the top of my head, but I know I've seen this before. Can anyone help me out here?