I think one of the bigger points here is actually context:
Even if Breitbart knew about any longer version of this particular video,not saying he did, by posting this section and getting this response he has dramatically shown the results of showing only 'part' of the story. This same 'partial' telling of the story has been intentionally used to great effect by the MSM as a direct assualt upon many right leaning individuals.

I wonder, does Rabbi Nesenoff get a trophy, wall plaque or money to go along with this coveted award?