more urgent tonight. now learning that the delivery methods have changed and they ve made their way to these distribution centers. a lot of fluid information, we ll keep you posted from austin tonight. tucker. tucker:uc thanks. as you can see, we are trying to sort out those basic facts of this, and as we are, the usual forces of division have tried to turn this into some kind of identity politics forum. members of congress immediately demanded that the white house classify these killings as domestic terrorism. they suggested there were racial motivations behind the bombingsh the truth is we don t know that. we don t know very much at all at this point. here are a few of the unanswered questions still out there. first, most obviously, who is doing this? we have no name, no face, not even a grainy photograph or police sketch of a suspect. the attacker or attackers remain totally mysterious. we re not even sure if it s a single person.rs it could be several. it could be an organized ef