LOL It's not even half past midnight and Kerry's team already has crafted a respose, and a pretty fucking lame one if you ask me.
http://weblogs.baltimoresun.com/news/politics/blog/2007/09/kerry_didnt_know_cops_were_tas.html
I'd say, judging from the fact that the whole auditorium was echoing with his screams and you could hear the taser clicking, it would be hard not to know.
Kerry did offer to answer the question, but I can't say I trust in good faith that he legitimately wanted to have the discussion.
Seems like a new tactic of posing ignorance to allow for the raping of our first amendment rights.