ribit,
Lots of possibilities. The gunman could be gay... could be muslim... could be a gay muslim.
(Heh. Could be a Teamster. How ironic would THAT be?)
There are more than enough sensitive groups to go around. Trying to pick the right one at this point is bound for failure.

Gold is $1,581/oz today. When it hits $2,000, it will be up 26.5%. Let's see how long that takes. - De 3/11/2013 - ANSWER: 7 Years, 5 Months