This is pretty much irrelevant though and we will always have this debate until people start to listen to those who boo. Yes, some will be racist sadly but I bet you most won't be at all. Kneeling will forever be linked to the BLM organisation, which has likely put race relations back years. There are less than desirable elements to some linked to the organisation and its quite simple, that many decent people do not support those elements.
The players can't steal an action and a slogan linked to the organisation and just state 'its nothing to do with it'! All this has done is divide people again, when we need to all be together on this. But the more people at the top, look down on those who boo and don't listen to any reasons for this, booing will just get worse if anything. It's a bit like the whole Brexit debate all over again - people must be stupid and racist if they boo kneeling. Again, I am sure there are some that are both stupid and racist - but the vast majority won't be, fairly certain of this.
My strong feeling is that if the players came up with a gesture they could all support [ bearing in mind those black players that are now against kneeling too ] - something like standing for ten seconds....'taking a stand against abuse'.....the booing will stop. But lets make it wider.....against abuse of players and people online....against homophobic abuse....
But please.....lets stop lazily labelling the people who boo as racists.