As reported by Dave Weigel of Slate, Breitbart was quickly confronted
 by progressive activist Ryan Clayton, who told him that since he had 
no credential to cover the conference, “maybe you should leave” and 
then asked if he felt it was “okay for you to be here without paying.”
Breitbart attempted to enter the main hall, but staffers refused to let
 him through without a press credential. They later told Talking Points 
Memo that he “will not be given a media credential, for fear that he’ll
 use it to disrupt the proceedings.”
Meanwhile, a cursing and hectoring crowd had pursued Breitbart with
 cries of “Coward! Coward!” into a service entrance and out of the building.
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