Re: YouTube: Aikido in a real street fight.
I saw a lunge and a strike to the throat; maybe if the civilian were coming at the gentleman in the yellow shirt (I find it difficult to use the title "officer" in this context) I would accept the argument it was an atemi. The civilian was standing still, with hands in pockets; if there was suspicion of a weapon on his person or he was suspected of an earlier attack, weapons drawn might have been the wiser choice for the responding units (but I am no armchair tactical officer!).
Agreed, though, context is everything when watching a video.