“The tragic story of the Triangle factory fire is a story about power,” Ms. Warren said. “A story of what happens when the rich and the powerful take control of government and use it to increase their own profits while they stick it to working people. But what happened in the aftermath of the fire is a different story about power — a story about our power, a story about what’s possible when we fight together as one.”

Our colleague Alexander Burns noted that in dueling speeches Monday night, Ms. Warren and President Trump laid out competing visions of populism.

Sanders shakes up his operation

With five months to go before the New Hampshire primary, Mr. Sanders overhauled his operations in the state, which he won by more than 22 percentage points in 2016.

Mr. Sanders, who hails from neighboring Vermont, almost certainly must win New Hampshire again next year to have a chance at the nomination.

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The campaign also parted ways with its political director in Iowa, according to a report that surfaced later in the week. Read more about that move here.

‘A sham process’: Democrats call for Kavanaugh’s impeachment

Several candidates called for the impeachment of Justice Brett M. Kavanaugh after The New York Times published new information about allegations of sexual misconduct against him.

Ms. Warren, Mr. Sanders and Senator Kamala Harris of California were among those who called for the justice’s impeachment.

“He was put on the Court through a sham process and his place on the Court is an insult to the pursuit of truth and justice,” Ms. Harris wrote.