As you know, I wouldn't boo. But it is no good taking a political gesture and then giving it another definition. It was clearly attributed to BLM. So now you see the reaction to them is mixed, why not change, like other teams/other sports have, so that the message isn't lost amongst all this nonsense? Especially the fist gesture.
It is 6 of one, half a dozen of another and in the meantime, the message is totally lost.
You can clearly see the message is lost, because most of the debate is about the knee, not the underlying problem.
So no, maybe they don't understand, due to the mixed messages it sends. And you could say, maybe the authorities that backed BLM, as opposed to the much more effective kick racism out, also don't understand the use of the gesture.