http://www.msnbc.msn.com/id/30030756/?GT1=43001
Another shooting, I believe this is the first large display of violence at one time, this year.
The suspect doesn't follow the more general profile of a mass shooter as most go in with the intention of committing suicide or going down shooting, however in this case he seems to have escaped for the time being.
EDIT: It would seem to me that the shooter is the patriotic sort who has a hate for immigrants as the choice of shooting people in a building that helps immigrants, sounds like a planned attack to me.
EDIT EDIT: CNN is reporting that the gunman is dead, I mistakenly thought he escaped as it said they locked down other areas of the city and giving his description.