That's not how it works. Because it hasn't happened so much in a while, people forget we used to have this kind of violence fairly frequenty. It is unAmerican to back down. Security will get better, but he will go where he wants.

Also, do we know that he was attending? He could be presenting remotely. 

TNStacker

he will get good press out of the Nashville conference


Bell_curve

You’re sure he will attend? Surely there’s a chance he now cancels some of his best-future schedule?