Never watched it in full. Saw pieces of it here and there. It is, of course, a total work of fiction although that didn't stop Stone from selling it as "an alternative truth" and demanding that schools show it to every student in the land. Garrison was considered a nut by a good chunk of the assassination conspiracy theorists crowd, but Stone makes him the hero. In the one trial he brought (against the Pesci character) the acquittal came in about 45 minutes and I believe it only took that long because the jury wanted lunch first. Side note: Garrison was eventually defeated out of his New Orleans District Attorney position in 1973 following corruption charges (for which he too was acquitted) by Harry Connick Sr., father of the signer.