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
as you can see:
Clippers Owner Donald Sterling Banned for Life from NBA for Racist Remarks
That is April 2014.
Next to that is Jordan admitting he is racist at his young age.
May 2014 with the same source of article.
https://bleacherreport.com/articles/2054700-michael-jordan-admits-he-considered-himself-a-racist-as-a-child
Happens to everyone when you experience a bad behaviour from another race or color.
I don't think this can be ended since there is still hatred living on each child or each person.
They should still resume NBA and let people know that there could be peace whatever color you may be.
You could be team mates or even better, brothers.
I'm pretty sure the NBA organization wants the season to resume, players can't stop them even with these controversy now.
Actually, they have to be professional as they are "professional player" NBA organization has nothing to do with racism as the organization itself has even ban an NBA team owner for just a racist remark.
What else do they need to see?
They belong in an organization that accepts different races, in fact, NBA opens up the organization for talents from different countries, that's why we've seen a lot of international players being popular in NBA, some example are, Luka Doncic, Dirk Nowitzki, Tony Parker, Manu Ginóbili, and many more.