So let me get this straight...
When a person on one side of an issue has a distorted view of people on the other side, this isn't a perfectly normal human thing. Rather, it's evidence that they're being swayed by the media (so long as they're discussing media portrayal of the opposing side)?
Furthermore, if you agree with someone's overall world view, you agree with everything they say, however illogical. And even when you don't actually agree, you pretend like you're agreeing, assuming that "probable evidence in favor of" a conclusion is the same as "proof" of it? Am I understanding you correctly there as well?
If you're going to make claims on a scientific forum, back them up with evidence. Provide me with polls of public opinion or give me news reports that have the specific biases you're referring to, don't just wave your hands and waste my time.