The connection
Exactly the same connection as the crimes of Charles Manson and the Beatle's song "Helter Skelter." A nutcase seizing on something almost at random to justify his lunacy.
If you think about it for a minute, millions of people listen to Glen Beck, and the desperate media managed to dig up this one guy. If Beck is an inspiration to violence, he's a damn crappy one.
As far as inspiring violence in his name, Karl Marx was considerably more successful.