Glenn Beck is restoring honor: that is, restoring Martin Luther King's movement back to its true conservative, white roots. Stephen Colbert explains (starting at 2:53 below -- although earlier in the segment the Vatican endorsement of the Blues Brothers as a good film for Catholics is worth watching for sure). As Colbert explains, the date (August 28 -- the anniversary of King's speech) is divinely inspired because "whenever I tell people what he's doing, they always say, 'holy sh##t!'" As Jake and Elwood would say, he's on a mission from God. Actually, this Blues Brothers dialogue is more appropriate for pretty much any Beck-related post:
Jake: You lied to me.