I was at the game today. A lot of people were wondering what had transpired. To be quite honest, I think a lot of the opposing white fan's hostility towards TA boils down to deep seeded racism and they see what he is trying to bring to the game as encroaching on a white man's game.
Three years ago, a cop stopped me while I was in the subway because I was wearing a White Sox hat and asked me what the deal was with Tim Anderson. He apparently used to work for MLB and started going on a rant about how he shouldn't be bat flipping and was messing up the game. Halfway through it became pretty obvious what his problem with TA was. A lot of the Yankees fans were booing TA when he came to bat. I get he has destroyed the Yankees in the past but I also think that impulse comes out when some people boo him.
As far as the Robinson quote goes, in context it makes complete sense. Also, keep in mind he was one of the first notable Major League players to start speaking out in support of Black Lives Matter and on social justice issues. In many ways, he has been a trailblazer in today's game.