A bias in a news story can make the information less credible because it's someone's opinion. It can affect the news story because the emphasis would be changed by the caster's opinion on the story.
Well if it says “quite the opposite” than it is obviously contrast because contrast means “finding the difference”
he was probably told that often? He probably was known for that?
Because nobody is perfect, an sometimes heroes are portrayed as perfect. And when characters are perfect nobody can relate, because nobody is perfect.