Men in black had originally an all black cast

Protecting the world from an
all black cast. 
Black Tails. The studios wasn`t ready for an all black movie, recalls the producer. They argued "We got to see something", I said no "This is an all black movie, everything is black, the actors, the clothes, the sets, everything. You can`t see shit!" They thought the audience wasn`t ready, so I put in some whites to get it made.

Image MIB3