Seems I'm in the minority here because I didn't think Laurence Fox said or did anything wrong on Question Time, in fact I was cheering him on.
He does make a bit of a tit of himself on Twitter but I really don't think he's racist at all; if I thought he was, I'd be the first to condemn him for it. I think he's also a good friend of Calvin Robinson (who's mixed race) and who also criticizes a lot of what Laurence Fox does; BLM, footballers taking the knee, etc. I've seen Calvin Robinson on a couple of TV programmes recently and he seems to be a really decent, sensible, intelligent man and I'm guessing he'd suss out a racist in a heartbeat and cut them out of his life.
Having said that, I do think LF would benefit from taking a break from social media for a while, especially if he does indeed have a substance abuse/alcohol problem. Most of us (myself included) make an ass of ourselves on social media after a few too many, but we're not in the public eye, so don't get judged as much. In fact, sometimes after a skinful I'm afraid to turn my computer on the next morning!