So what, in many cases people choose mates and friends based on their race preferences.
Many clients choose which businesses they will deal with based on the origin business owner (some prefer to frequent or to avoid Indian or Middle Eastern or Asian establishments for example).
People must be able to discriminate however they see fit and I am talking about people in their individual lives and I am also talking about businesses obviously.
Yes, it should be possible to discriminate based on race, absolutely. Race, age, sex, any form of discrimination must be absolutely legal (and by the way it is unconstitutional, illegal for the federal government to regulate businesses and the entire concept of interstate commerce does not allow government to regulate business, it is only there to prevent individual States from erecting barriers of entry, which are still all there, so the federal government is not doing what it's job is and instead it constantly harasses businesses for no reason whatsoever).
Now, government must not be able to discriminate against anybody based on age, race, sex, ethnicity but that is also constantly happening for example with the war on drugs, with the so called 'war on terrorism', with every war that government runs.
Government must not be able to discriminate because it destroys the rule of law, destroys the free market (which is already destroyed in USA of-course) and eventually destroys the economy and thus the society. Government must be forced to treat people equally regardless of their natural characteristics, individuals must not be forced into anything.
If you will not accept government forcing you to marry any particular person or to frequent any particular business then it is inconsistent for you to be cheering for the government forcing a business to either hire or to serve any particular person. Cheering for it is the real discrimination and helps the government to grow its gigantic poisonous tentacles that end up stealing and murdering everything on their path.