LEAD: THIS PAST SUNDAY, IN NEWARK, OVER TEN THOUSAND PARTICIPATED IN THE 40TH AFRICAN AMERICAN HERITAGE PARADE, THE OLDEST SUCH EVENT IN NEW JERSEY. AT THE HEAD OF THE LONG PROCESSION OF MARCHING BANDS, COULD BE SEEN A LARGE BALLOON DISPLAYING THE FACE AND NAME OF CRISPUS ATTUCKS, THE FUGITIVE SLAVE WHO BECAME A WAR OF INDEPENDENCE HERO AS THE FIRST PATRIOT KILLED IN THE BOSTON REBELLION OF MARCH 5, 1770. FROM THE STEPS OF THE NEWARK CITY HALL, NEWARK NATIVE SON AND CHAIR OF THE PEOPLES ORGANIZATION FOR PROGRESS LARRY HAMM GAVE A KEYNOTE ADDRESS SALUTING THE LEGACY OF THOSE WHO RISKED ALL FOR THE CAUSE OF JUSTICE. WE END THIS NEWS BROADCAST WITH AN EXERPT FROM HIS SPEECH: