lots of people marched. but jews were the first ones down to register voters and march. you can like that or not or agree or not. but given jewish history, it was felt to be a moral imperative. that relationship didn't change until after the Bakke decision and the inflammatory rhetoric of people like jackson and farrakhan.
as for rev al, he has toned down the race baiting a bit. but he made a career out of dividing people for a while.