you didn't answer the question.
let me pose to you the same question that cowardly racist rob refuses to answer:
did denial of service to blacks in the south before civil rights cause harm?
How does denial of service "cause" harm again? The easy and quick answer is it doesn't, as it is illogical.
Did the hypothetical fat lady at Wendy's "cause" you a harm when she refused your offer of sex? No, she correctly assumed that munching greasy french fries was a better use of her time than watching you try to get hard without your magic gerbils around to assist you. Your blue balls were not caused by her failing to interact with you.
She has a right to chose her associations, just as you do. All people have that right, but no people have the right to force those choices on others do they?
The cause of a situation is something that results in an occurrence, not a perpetuation of a current condition or a maintaining of a present state that is not a result of your actions.
Has my not doing my volunteer work to feed the hungry gerbils in India "caused" them to starve? No, it hasn't.
Has your not feeding the hungry gerbils in India "caused" them to be in their present state, again no, no it hasn't gerbil meister.
Has your not feeding the hungry gerbils you keep in a cage locked in the closet at your house caused them a harm? Maybe, but I'm digressing.
What is a causal thing? When you shit on the floor at Wendy's your action DID CAUSE a pile of dung to be placed in the wrong place. You were shitting on another persons property when you created the doo doo stained floor. You CAUSED the stench. It was a direct result of your poor decision and your ACTION TAKEN to invade someone else property and foul it.
What is not a causal thing? If you hadn't shit on the floor, the floor was not any better or any worse off as a result of your inaction with it. It remained in the status quo. The status of the floor was not altered by your inaction. You were indifferent in that instance. Maybe instead you shit your pants or something else, but the status of the floor, whether it was clean or dirty had nothing to do with you if you failed to interact with it.
When you framed the question, you did it wrong dipshit. You should have said "were blacks systematically discriminated against" The answer there is in many instances, yes.
You also erroneously operate on the premise that using "discrimination" regarding how you will use your OWN body and your OWN property is somehow an act of initiated aggression, which it isn't. Everybody has the right to self determine, but NOBODY has the right to relieve another of that right.
You assume because blacks got a shitty deal that somehow relieving private property owners of their right to control their OWN property somehow balances the scales. Which of course it doesn't. Making people interact or forcefully integrate on a non-consensual basis and under the threat of force is never the answer Hitler.
You are not a very bright fellow. You should learn the difference between initiated aggression and indifference. You should also learn that shitting on others property causes them harm, but not shitting on it....causes nothing.