They believe this is or should be a problem for other folks as well since its manifestly such an obvious response to the problem of people dieing in a house (hunh?!).
The Taliban shared in the Islamist belief that most of the world's problems are caused by Jews who are in league with the United States.
So, simply assume the killer in the DC area is an Afghan Taliban, and you have the answer to the patterns he has made.
One pattern is that he has been killing people on or near property owned by Jewish people - to wit: Shoppers Food Warehouse, Michael's, Hillandale Beer and Wine, and quite possibly some of the gas stations. I was unable to find data on the ownership of the stations since some are franchise operations and others are owned by the companies.
In the eyes of our hypothetical Taliban shooter, that "ruins the property"!~ This is kind of like blowing up the Buddha statues.
Then, he shoots folks at places with a name from the list of the Hebrew 12 Tribes of Israel - Manassas and Benjamin so far, and maybe a couple of the others.
He also managed to kill someone in front of a synagogue that isn't even in the phone book. It's located inside the Washington Ethical Society on Kalmia street. The only reference at www.google.com is a news article in the Washington Blade (a gay oriented newspaper around here.) You can find it at their website. This one leads me to believe the shooter is a cab driver in the Silver Spring area.
There are several other shootings that occurred within a block or two of yet other synagogues.
If as many as three Methodist churches had been this close to this many killings in this period of time he would be called the Weslyan Killer. The proximities to these sites is important, and I would imagine by now the Montgomery County P&P squad have figured it all out and are on their way to the kabob joint/bakery at this moment to pick up a couple of white trucks to check out.
From the WP:
"A 30-year-old Woodbridge man, Atiqullah Qazei, was charged by Arlington police on Oct. 3 with filing a false police report after he claimed that he was the sniper."