ANCHOR INTRO IN THE 1940S, 50S AND 60S THERE WAS A HUGE MIGRATION OF AFRICAN AMERICANS FROM THE SOUTH TO THE NORTH ... AN ESCAPE FROM THE COUNTRY'S MOST VIRULANT RACISM AND A SEARCH FOR JOBS. BUT NOW .... AFRICAN AMERICANS ARE MOVING BACK TO THE SOUTH IN RECORD NUMBERS.... ACCCORDING TO A RECENT UNIVERSITY OF MICHIGAN STUDY. MINNESOTA IS RANKED 12TH FOR THE NUMBER OF AFRICAN AMERICANS MOVING TO THE SOUTH. AS MINNESOTA PUBLIC RADIO'S MARY STUCKY REPORTS, THIS DEMOGRAPHIC SHIFT RAISES QUESTIONS ABOUT THE RACIAL TOLERANCE OF NORTHERN STATES INCLUDING MINNESOTA.