"Russian crazies".    C'mon people, don't you read or listen to anything?   It seems clear they were of Chechen heritage--a group struggling against Russian domination of their area.

What's more, they weren't even born in Chechnya.

It's unclear what the motive was, but so far there is nothing to link the attack to anything having to do with the Chechen conflict.

Why do so many Catters insist on snap judgments of everything? Are they (especially Leftists, it seems) so much prisoners of technology that they demand that every question be answered in 1 1/2 minutes, since that's the limit of their attention span?