Now this makes sense. Do your job, as there are bunch of other ways to support something you believe in, world doesn't have to stop. I mean I would understand if players go on strike in case there is systematic racism inside NBA organization. But in this situation, play the game, and then use money and influence to support whatever you want.
In the end, they will still struggle if they continue to go with their principle, the world needs to continue just like that even in the current situation we are now, the government still allow business to resume as we need our economy to survive.
That racism issue does not only happen now, it happen in the past already and NBA is not tolerating that.
as you can see:
Clippers Owner Donald Sterling Banned for Life from NBA for Racist Remarks