I read it and I still don't see what did that was wrong.
IMHO, she merely relayed what happened and brought up a valid argument - yes, they might have been musicians, but if terrorist can learn how to fly planes to commit terroristic acts, why couldn't they learn to play instruments?
She also showed how they were NOT thoroughly checked out and wondered if our stance against racial profiling will end up doing us more harm than good.
Her SECOND article, however, went over the top to me.