I disagree, as my previous post details. And if you're basing your argument on 'contributing to institutionalized racism' then again, I disagree. The key, IMHO, is KNOWINGLY. Yes, there might have been 'institutionalized racism' according to today's standards. Many years ago there were things that were standard practice (like restrictive covenants in home sales) that today we would find abhorrent. The people who signed them were not racist (by the standards of their day), they weren't doing it with the malicious intent to exclude in their hearts, they were just doing what was normal. Wrong, but normal for that time.
If I purchase a popular garment ("everyone is getting that shirt, I gotta have one, too!") and later find that it was made in a sweatshop, am I 'guilty' of contributing to the misery of the workers? No. I may have done so, but I did so unknowingly, I did so in ignorance. Same thing. To continue would be wrong, now that I know. I may even choose to take the shirt back and demand a refund. But no one should be labeled for mistakes made in the past.