THE speech was grotesquely racist - littered with cracks about dead white people. And it featured an insane call for blacks to outsmart the white man by ridding their bodies of all things white: white milk, white sugar, white bread. But this racist rant was not spoken in a basement somewhere. It was part of a city-hosted "Unity in Diversity" event yesterday - and it took place inside the headquarters of the city's Department of Housing Preservation and Development. During working hours. Your tax money at work. The speaker was Dr. Leonard Jeffries, the disgraced City University of New York...