I really can't believe that any white person would let a teenage or twenty something black person handle their food out of their sight.

That group is being trained to hate your guts and most of them probably do. You think these fast food workers with their inferiority complexes, fragile egos and hatred for whites aren't defiling your food back in the kitchen? Why wouldn't they? Because they might lose a minimum wage job if caught? That's not a lot of incentive to behave, and they were most likely not brought up with ethics and decency.

Do you really want to take that gamble?