The more I see of this event the more I'm sure it was just a drill gone live, though a very expensive one!
Some horror flick producers for the scene on concert square (that liquid blood coming out of the mouth effect is getting boring for anyone into horrors), while the Taxi video was some Drive inspired comedy. Sure the Taxi driver was a great actor and sounded almost convincing....but the people he was carrying were obvious fakers and typical Hollywood rejects.
As someone who's watched countless videos of real shootings from wars in Ukraine and Syria, and having seen real wounded, real pain and real suffering and grief.....that stuff from Vegas looks like Hollywoodized crap to me. Surely they stepped up their game compared to the Boston bombing hoax 10 years ago...but still faking real is a tough task. And some of the crisis actors were atrocious and were smiling all over the place in duping delight:
https://steemit.com/conspiracy/@lavater/vegas-shooting-hoax-a-freemasonic-freak-show