Apparently haven't taught reading comprehension in a while either.  I didn't say discrimination in renting or selling wasn't illegal.  But having experienced blatant discrimination both in terms of my renting and purchasing property, It's real hard to enforce.  AND, you can build on your property, and/or allow others to, WITHOUT offering the lots/buildings for public sale.  Legally.  Constitutionally, even.  Kinda like how a lot of clubs remain 'private' so they don't have to admit anyone they don't want to.  Next question.