No. Again, this is the US. The problem with racism is what its establishment in a society on a limited landscape necessarily involves, what it does to the people in the targeted races. Attitude is not significant. It's structural. If you forbid aggression, you forbid establishment of racism - gated communities of racists involve aggression against the targeted race as soon as the population of racists in the landscape is significant. You cannot, physically, have non-agressive and non-violent sundown towns in a majority white landscape. That's because those libertarians live in a fantasy world where scale doesn't matter. Racist immigration policies on a town or county scale severely restrict travel, mobility, and opportunity, for individuals in the targeted races. On a single dwelling scale, or a large nation scale, they do not. It's a property of the physical, two dimensional, resource-limited landscape in which human beings actually live. Again: the US has experience with this stuff. You can correct your theories according to evidence. Actual liberty is increased, for everyone, by forbidding the physical establishment of racism on the landscape at the town, city, county, or State level.