> "He walked on stage and started yelling at the presenters. He was asked to leave by multiple groups of security staff and refused to leave while interrupting the talk. He demanded he be physically removed. The staff security eventually acquiesced to his demands."
From my read, Dmitry didn't upset his audience, excluding the flagged TrueDuality commenter. Rather, after Dimitry's protest and physical removal, a bunch of the audience went outside to listen to his impromptu talk on the sidewalk.
Did you do these things ?