For a little more local perspective - Mr. Yazdanpanah was about the fifth or sixth guy to go off his nut and kill a bunch of people he knew in Tarrant County alone this year. Here’s the list, again, off of the sidebar in the Star-Telegram’s story on the killings:

Domestic shootings with multiple victims in Tarrant County in 2011

One of the shooters was Vietnamese, and yet, I don’t hear anybody worrying about that…