I doubt the perp was a muslim. A muslim would be just as likely to shoot the baristas and other customers at the coffeeshop, but this killer was only after the cops. However there is one thing I can guarantee: the killer did not vote for John McCain in 2008.
I agree. It could be a Gang retaliation. We know how Parkland, Lakewood, East Tacoma and Spanaway are bad areas for gangs, but it also could be more closely related with the Oct 31 ambush of the Seattle Police Officer. A Musie would of gone after military in the area. With McCHord AFB right next door, and Ft Lewis only a couple of exits away, there is no shortage of military the stores, restaurants, and other hangouts.