I agree with XO. The Rev Al has a very long career, in the course of which a couple of mistakes were made. Given the long and lamentable history of white racist violence on blacks, including white cops beating, raping and murdering black women, it was understandable that the Rev would fall for a fake story somewhere in his long crusade against racist violence. It was not his whole story, the story would look better without that mistake in it, but it's a part of the record.
In WWII, the USAAF mistakenly blew away about 700 front-line Canadian combat infantry during the battle for Normandy. Not the brightest page in the USAAF's history, but should I let that one black page tarnish their name forever? You gotta look at the whole of their record, the good and the bad, same thing with the Rev. Al. And don't forget that Tawana Brawley was thirty or forty years ago. Gimme a break.