It will take a concerted effort by every sector of our society to respond to Trumpism’s threat.

Find common ground with President Trump, or resist? Also: Medical decisions; climate research cuts; deep sea mining risks; a gift to Harvard.

For Trump’s fawning enablers, Abrego Garcia’s imprisonment is just another feat to applaud.

The justices and the American people must hold the line together.

Trump is disappearing people to a Salvadoran prison for terrorists. And he says he wants to send “homegrown” Americans there next.

The columnist on the value of acknowledging the president’s wins.

And how this could all go down in the courts.

Trump is disappearing people to a Salvadoran prison for terrorists. And he says he wants to send “homegrown” Americans there next.

And how this could all go down in the courts.

These estimates, drawn from the location data of three billion Facebook users, provide a view of human migration in extraordinary detail.

Dive into a new data set released by Meta, charting immigration flows among 181 countries over four years.

Trump thinks he holds all the cards in this high-stakes game, but he’s wrong.

Trump’s authoritarian actions are vandalizing the American project.

It has simmering problems of its own, but China is ready to take center stage.

Responses to a guest essay by Michael S. Roth, the president of Wesleyan University. Also: Older workers and brain health; cattle and pain.

The university’s willingness to stand up to the Trump administration can be a model.

We waited too long to make laws around social media. A.I. has similar problems.

Why an effort to reindustrialize America is likely to fail.

Kilmar Armando Abrego Garcia should not be in prison. Especially not in El Salvador.

Where were these voices when the university was under assault from the Trump administration?

Quick, everyone! Talk about fluoride, not measles!

China’s e-commerce ecosystem illustrates how Trump’s tariffs only strengthen that country’s hand.

Trump’s worldview is stuck in the 1970s, and his whole administration is a cruel farce.

An olive branch is easier to accept when it is offered from the tip of a sword.

Readers discuss the case of the immigrant wrongly deported to El Salvador. Also: Harvard’s battle against President Trump.

The thrill over its response to the Trump administration is a measure of how low, and how fast, our expectations have fallen.

The Times Opinion columnist discusses what he thinks Trump — and American policymakers — misunderstand about China in the escalating trade war.

The Times Opinion columnist discusses what he thinks Trump — and American policymakers — misunderstand about China in the escalating trade war.

If one’s name is a brand, then mine is tarnished.