Sorry, didn't get back to this right away. I thought I heard terrorist on the first one, couldn't hear specifics on the 2nd one. But the specific "kill him" that is being talked about, was reported to have been shouted before Sarah was on stage. There is still no proof that it happened. I mean really, if it was shouted or screamed, more than 1 person would have heard it.
About the other comments, I can't answer right now. I would have to come back to it when my mind is fresh. Thanks for posting the clip.