The same people that have paid to continue the protests will make sure that this rally is forcibly interrupted.
Unfortunately he again is making threats again. The New York Times got it absolutely correct; Mr. Trump’s threats, both on Twitter and off, often amount to little more than bluster. He did not follow through, for an example, on a threat to send in the military if state officials did not quell protests themselves.
IF he doesn't follow through, and these riots and "protests" are allowed to get out of control as they have up until now, this rally will become an unmitigated disaster and our country will suffer severe consequences.
I hope he's prepared.