Wow.. You just ripped apart and ruined this joke..

Q.what do you call a lot of black people runing down a hill?
A.mudslide

Q.what do you call a lot of Mexicans running down a hill?
A.jailbreak

Its

What do you call a bunch of boaters running down a hill? Sand Storm
What do you call a bunch of white guys running down a hill? Avalanche
What do you call a bunch of black guys running down a hill? Jail Break

its all in one.