NBA should force Cuban to sell. Honestly feel like Sterling isn't the only owner that felt this way. Shame on Sterling and Cuban. If Cuban doesn't vote to eject Sterling he should lose his team and his Shark Tank deal. Racism is the worst thing that anyone can have in their heart. If you cannot get past this while having one of the greatest presidents of all time in office, that just happens to be African American then society as a whole has truly not evolved. Any owner that does not vote Sterling out is a racist and should lose their team as a result.
Sterling was racist, Cuban was honest. Anybody who says that they treat every person the exact same way, regardless of how they look, is lying.
Also, in terms of your last sentence, it just strikes me as strange that you're arguing for tolerance, while at the same time being completely intolerant of anybody else's opposing viewpoint. While nobody should defend racism, reasonable minds can disagree on whether Sterling's offense rises to one where he should lose his team. I think the NBA is justified in its actions due to the contracts Sterling signed, and more importantly for the potential damage to the NBA brand. However, people who disagree with me aren't necessarily, or even likely, racists.