Now Twitterati are attacking the musician who was on stage when the gunfire erupted:

#BREAKING VIDEO: Jason Aldean on stage as a gunman begins to fire upon crowd in Las Vegas #vegasshooting #Vegas #mandalaybay pic.twitter.com/Uy8UOK2NAS

— THE INSURANCE MAN (@babahererra) October 2, 2017

Horrible coward #bitchmove ran while fans hadn’t figured out what was happening. #MandalayBay https://t.co/hAHsozdxLC

— Resistance (@udontknowokay) October 2, 2017