Never mind that crazy Movie,MEN IN BLACK with Tommy Lee Jones and Will Smith, who are the real men in black. In the 1950s and 1960s there were thousands of reports of the mysterious men in black, visiting people who had witnessed UFO'S.
People who witnessed UFO's were often visited by the men in black and told to keep quiet about their experience.
The Men In black always seem to arrive in Black Cars,in appearance they were small in stature with a tanned complexion and had black suits and sunglasses as if they were hiding their eyes.
They speak in a monotone voice like a robot,so are they robots sent by alien intelligences to shut people up after they have seen a UFO.