Comment by TheOtherHobbes

The US's atrocities and slavery happened much more recently. And kept happening while other countries moved on to modern social democracy.

And are still happening today, under the thin disguise of for-profit prisons and no-work = no-healthcare.

The US has a long history of murdering people who are too politically progressive and/or get in the way of corporate profits.

Racial segregation was still considered normal in the 1950s. There's still a huge swathe of the population who can't cope with the idea of anyone who isn't rich and white, ideally a man, with political power.

As for immigrants - there are some people in El Salvador who won't agree with you.