From Debbie Schlussel, in a post entitled "So What If The Holocaust Museum Shooter Is A White Christian…..?":

Make no mistake. Muslims created this atmosphere where hatred of the Jews is okay and must be "tolerated" as a legitimate point of view. The shooting today is just yet another manifestation emanating from that viewpoint–another manifestation of the welcome mat that Muslims rolled out for fellow anti-Semites of all stripes to no longer be afraid to come out of the closet.

Right.  So it's still the fault of Muslims and 9/11.  Because anti-Semites would just be sitting there quietly had those brown-skinned people not "opened the door".

I guess that whole Nazi thing back in the 30's and 40's was also Muslim-inspired.