CNN and Fox

This morning, quite literally as the first conversation we walked into class, someone started reading CNN.com. Another friend made the usual joke of "oh, you read the liberal media?" Which sparked a conversation.

As per usual, I challenged him to point out an actual EXAMPLE of CNN's "obvious liberal bias" that counters Fox's "equally conservative bias" and was told that my "liberal indoctrination wouldn't allow me to see the point of his argument."

Not only was no argument made other than general assertions that they were opposing sides of the political news spectrum, but no evidence or examples were given. Why is it that when it comes to math or science, we expect evidence, logical follow through and then conclusion, but when it comes to politics, simply asserting a conclusion as fact is enough? Moreover, when you ask for evidence, you get the look of "how cute...he thinks this isn't true on its face."

So I throw out the challenge again, since no one has accepted on FB or in conversation. Where is there evidence of CNN's pervasive liberal bias? Where is the Glen Beck, Bill O'Reilly, Hannity, Fox and Friends or Gretchen what's-her-name on CNN? Are there examples on video of some of this liberal propoganda?