Boondock Saint's Joke

before i tell this joke im gonna say i am not racist and i appologize to anyone who takes offense to this joke it is from the movie Boondock Saints.

There was a black guy, a mexican guy, and a white guy. They find this genie that grants them each one wish the black guy says, i wish that all the black people were back in africa and happy. POOF it happened. the mexican guy wishes, i wish all my mexican people were back in mexico and happy. POOF it happened. then the white guy says, so your telling me that all the blacks and mexicans are gone? the genie tells him yes. so the white guy says, hmm... well, ill have a coke