You provided no link for any true discussion. I don't know about Matthews, nor what proof he gave if he made that statement, but Glenn Beck thinks the Tea Party is racist.
Glenn Beck Suggests Tea Party Is Racist | ThinkProgress
n a startling admission from a major Tea Party champion, former Fox News host Glenn Beck said Friday that race may be a motivating factor in the Tea Party’s opposition to President Obama. In an interview with Fox Business host Andrew Napolitano, Beck said Obama and GOP front-runner Newt Gingrich are both “big government progressive[s],” so he doesn’t understand why Tea Party members are supporting Gingrich. “If you’re against [Obama] but you’re for [Gingrich], it must be about race,” Beck said:
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Indeed, just this weekend, a Tea Party group in Kansas drew condemnations from the local NAACP for depicting President Obama as a skunk. “It is half black, half white, and almost everything it does, stinks,” reads the website of the Patriot Freedom Alliance, a Tea Party of Hutchinson, under a picture suggesting “the skunk has replaced the eagle as the symbol for the president.” Darrell Pope, president of the Hutchinson NAACP, called it “a blatant statement of racism.”