I am no fan of Cantrell, but I think you're being overdramatic again. Link gives a decent explanation as to why the mayor and the FBI are saying two different things.
https://www.cnn.com/us/live-news/ne...street-01-01-24-hnk#cm5dxaant0000356mnvmcjc0z
And to your point about future events, that's not going happen. Is the NFL going to stop having events in New York, Atlanta, L.A., who have experienced far worse events then this? No. Neither will be the case here.
I hope we can focus on the lives lost or injured today and not these assumptions that have nothing to do with it.