“Wacky Jacky is campaigning with Pocahontas,” Mr. Trump announced, tagging Ms. Rosen with a derisive nickname of her own. “You believe this? In your state?”
His audience laughed along and erupted in boos aimed at Ms. Warren and Ms. Rosen, seemingly encouraging Mr. Trump. The president, who drew a backlash in November for calling Ms. Warren “Pocahontas” during an event with Navajo military veterans, noted that he had faced calls to apologize for the epithet.
“I did apologize,” Mr. Trump said. “To the memory of Pocahontas, I apologized.”
The side-by-side contrast, of Ms. Warren’s event in Reno and Mr. Trump’s in Las Vegas, conjured an image of a presidential matchup defined on one side by unrelenting liberal criticism of Mr. Trump’s policies and ethics, and on the other side by unrestrained personal attacks on a Massachusetts progressive that are aimed at delighting conservatives. While Mr. Trump often speaks in harshly derogatory terms about his political adversaries, Ms. Warren appears to inspire distinctive scorn among his likeliest Democratic challengers for re-election. None of more than a dozen other Democrats known to be eyeing 2020 has drawn such a contemptuous label from the president, or faced as much early pressure to answer his swipes as Ms. Warren.
It was in her final public event of the day — a question-and-answer session with voters hosted by Nevada’s Democratic senator, Catherine Cortez Masto — that Ms. Warren did just that. In a tone that mingled defiance with disdain, Ms. Warren accused Mr. Trump of seeking to distract from what she cast as a popular revolt against his agenda, most recently his “zero tolerance” policy on the border that separated migrant children from their parents.
“How does he do that? He attacks Jacky Rosen and he throws out a racial slur at me,” Ms. Warren said, retorting that she would not be “shut up” and noting — as long as Native American heritage was under discussion — that the National Congress of American Indians had condemned the family separation policy.
And again, without explicitly stating her own plans, Ms. Warren said the effort to stop Mr. Trump and his cohort would have to extend beyond 2018 and into 2020. Blasting the tax-cut law that Mr. Trump visited Nevada to tout, Ms. Warren suggested she was just getting started.
“I am in this fight,” she said. “And I am in this fight all the way.”