On that note I can recommend this podcast episode of Déjà News:

As conservative governors try to score political points by depositing busloads and planeloads of migrants in liberal cities, it can seem like an unprecedented exercise in cruelty. But it’s a page ripped from an earlier playbook in U.S. politics, one that was forgotten for decades for a very good reason. Rachel Maddow and Isaac-Davy Aronson revisit the racist Reverse Freedom Rides of the 1960s.

History goes in circles…