True heroes know this. And you want to be a hero, don't you? So if you have an issue that you're passionate about, you owe it to humanity to stand up against all opposition ... unless what you believe in happens to be the opposite of the beliefs of the people handing out that advice.
"Mom, I took your advice about fighting for my beliefs and got a new flag for our front yard."
A Better Alternative:
"Never stop fighting ... and never stop thinking about whether you're actually on the right side."
Ask Democrats if Mitt Romney should continue fighting for what he believes in, and the resulting laughter could power a city for a month. Ask Republicans the same thing about Obama, and their dumbfounded looks could only be described as "otherworldly." See, to the opposition, those people aren't "fighting for what they believe in." They are the personification of evil whose only goal is the total destruction of the morally sound.