Slavery is already legal in US if you arrest a person first. That is an exception of the 13th amendment,

I assume that is why US has the biggest prison population in the World and is 6th country in the World by per capita incarceration rate (first western country). If China and India would incarcerate it’s citizens as much as US, China would have 4 times and India 10 times it’s current prison population. And of course white people are about 8 times less likely to be incarcerated then black people.

“Land of the free”

In my experience with regular everyday xenophobes, if you simply say that the only thing that is important to you is that somebody is a good person and all else doesn’t matter, almost everyone will agree.

Fighting is usually counter-prodactive, most people aren’t crazy, they just might be focused on unimportant things. Simply calm people down and bring focus on important issues, such as worker rights, corruption, self-organizing. Don’t waste your time debating who should be allowed to participate in which sport competition.