This week's Mainstream Media Scream features Fox News analyst Juan Williams describing those supporting impeachment of President Obama as a whites-only group, suggesting racism is behind the movement.

Fox News Sunday Host Chris Wallace: “Do you think that the Republican opposition to this president, you heard [Rep.] Hakeem Jeffries talk about hatred, is racial or do you think it’s based on principles and policies?”

Juan Williams: “Well, all I can do is look at the numbers. If you look at the core constituency, the people who are in, let's say Tea Party opposition, support of impeachment, there's no diversity. It's a white older group of people. As to whether or not it's racial, you know, President Obama and others have said there's some people who don't like him because of his race, some people who do like him.

"But I would say if you just break it down as a matter of political analysis and say who is this group, it reminds me that the Republican Party has become almost a completely white party.”

Media Research Center Vice President of Research Brent Baker explains our pick: “A very disappointing rant from Williams, who sounded more like Chris Matthews than as astute political analyst in impugning Obama's critics as a bunch of racists. That's the kind of easy demagoguery you expect on MSNBC, not on Fox News. After all, a just-as-white Republican Party opposed Bill Clinton and tried to impeach him.”

Rating: Five out of five screams.

Paul Bedard, the Washington Examiner's "Washington Secrets" columnist, can be contacted at