Rev. Al Sharpton has written to National Football League Commissioner Roger Goodell to urge that controversial conservative radio show host Rush Limbaugh not be allowed to join in a bid to buy the St. Louis Rams.

According to Politico, Sharpton tells Goodell that Limbaugh is "anti-NFL" and that some things Rush has said over the years — including a comparison of NFL teams to the Crips and Bloods gangs — are "disturbing."

Limbaugh confirmed last week that he's part of a group that hopes to buy the football club.

St. Louis Post-Dispatch columnist Bryan Burwell wrote that the league should think twice before approving such a deal. Bryan pointed to what he said are some of Limbaugh's own words, such as:

"I mean, let's face it, we didn't have slavery in this country for over 100 years because it was a bad thing. Quite the opposite: Slavery built the South. I'm not saying we should bring it back. I'm just saying it had its merits. For one thing, the streets were safer after dark."

Limbaugh, by the way, is getting extensive coverage on NBC's Today Show this week. Today, he said that most of his critics "don't even listen to me; they are clueless":

More from Limbaugh's interview with NBC is due on Tuesday's edition of Today.