Do you think an owner should be allowed to decide what race is served at his restaurant?
A better question is do you two think that government has the right to tell those who own their own businesses how to run those businesses?
That's exactly what the ACLU will be filing in its briefs against these pharmacies.
You can't have it both ways. Either the government can tell you how to run a business or it can't. If both of you say that government is in control of business decisions that affect social policy then you're both on a slippery slope.
Of course a restaurant owner should be free to serve whites only. And you and I are perfectly free to not patronize such a restaurant. If all the meddlesome laws on that subject went away, there'd be precious few establishments actually operating that way, and the few that did would be small and financially struggling.