Imagine how silly, not to mention impossible, life would be if discrimination were outlawed. Imagine engaging in just about any activity where we couldn't discriminate by race, sex, height, weight, age, mannerisms, college selection, looks or ability; it would turn into a carnival...
Common sense suggests that not all discrimination should be eliminated, so the question is, what kind of discrimination should be permitted? I'm guessing the answer depends on one's values for freedom of association, keeping in mind freedom of association implies freedom not to associate.
