How many times until mathematically possible?

This guy made a vid claiming Elvis, 2 pac, etc were in Trump crowds. Some of its legit, some not so legit. But tonight I saw the "2 Pac, and Elvis" Elvis is not the guy in the video its the Preacher- Google Elvis Preacher at Trump Rallys.

Sauce to vid-https://www.youtube.com/watch?v=V3rwKI72_Zs&list=LLNTlH3e7UnCFaOwYKtsR6lw&index=7&t=0s

Photo is from tonight-