I am not sure, but I think Milton Friedman once revealed the depths of his ignorance about racial segregation in the US and that the claim that laws demanding all segregation be dismantled were a violation of the free market principle and that a true free market would dissolve segregation.

Chicago, as you mentioned, was used as an example to show just how dumb he was. Chicago had no official segregation policy. From a purely legal standpoint if an Irishman wanted to get an apartment in a black neighborhood and invite Italian friends over that would be a huge taboo and suffer reprecussions over it even if he wasn't doing anything remotely illegal.

The only way it COULD have dismantled is to make law to strictly forbid that kind of discrimination on any grounds.

[–] psud@aussie.zone 1 points 5 hours ago

Australia heavily advertised multiculturalism and anti-racism during the '70s and '80s and then stopped. It seemed effective. We had one not very racist generation.