Keith Olbermann blasted former Fox News host Glenn Beck on his "Worst Persons" segment Monday night for saying the youth camp attacked in Norway was ‘like the Hitler Youth.’

"Note please what Beck thinks is disturbing," Olbermann said. "Not the Islamophobic monster thinking he's wiping out the next generation of liberals in his country."

"This afternoon, many in the Right Wing blogosphere supported those words of Beck's because they believe truth is a defense -- that a politically-oriented camp for teenaged kids is like the Hitler Youth."

Olbermann noted that the ultra-conservative John Birch Society ran overnight summer camps for teenagers for more than 30 years.

"Let's just face this: Glenn Beck is a seriously disturbed human being. And he's today's Worst Person In The World."

Watch video, courtesy of Current TV, below: