Donald Trump has made the mass deportation of immigrants a centerpiece of his plans for a second term, vowing to forcibly remove as many as 20 million people from the country. Historian Ana Raquel Minian, who studies the history of immigration, says earlier mass deportation programs in the 1930s and '50s led to widespread abuse, tearing many families apart through violent means that also resulted in the expulsion of many U.S. citizens.

“These deportations that Trump is claiming that he will do will have mass implications to our civil rights, to our communities and to our economy, and of course to the people who are being deported themselves,” says Minian. She also says that while Trump’s extremist rhetoric encourages hate and violence against vulnerable communities, in terms of policy there is great continuity with the Biden administration, which kept many of the same policies in place.