How long would you survive in this scenario?

honestly probably 99% chance nothing would happen

300 million+ people is way too friggin many, whatever you see on the news is statistically insignificant

the only people i ever know who died killed themselves

Tim Wolfe has the answer in "The Bonfire of The Vanities".

Depends if you are throwing swisher sweets out and candy and offering graype draank.

I can't say because this is something I would NEVER do. I have trouble imagining the stupidity to do such a thing.

Depends if I had my friends Smith & Wesson with me

Thats crazy that's even worse than that kid jumping off the boat into the hungry starving shark filled waters.

Several dozens of minutes before the bums came out and beat to the death.

Reverse it - if a someone yelled cracker in a white neighborhood, they could for days and not a bad thing would befall them. Maybe the police would get called for a suspicious person report - that's all.