distributed differentiated discrimination is always good, market will tell who is right and who is wrong. Racism is stupid and retarded, and racist people will probably make bad choices trusting people based on somatic characteristics that dont correspond to nothing (I mean "real retarded racist people", not anyone who understand that there are important genetic differencies across human ethnics, and are called "racist" by retarded leftists...)
Discussion
every discrimination that is not a violent attack is just expression of free speech, and is always good.
discrimination is a thought process so it's never a violent attack
to compel or prohibit someone to do anything is a violent attack, either performed using coercion (threat against different action) or direct threat... doesn't even matter if they would prefer the action choice of the attacker, it's still an attack