Top Democratic vice president nominee Elizabeth Warren is the next big thing unveiled in the election campaign of Democratic front-runner Hillary Clinton, which she will possibly use against her Republican rival Donald Trump.

Warren delivered a speech on Tuesday at the Center for Popular Democracy’s annual gala held in Washington. She attacked Trump and blamed him for taking advantage of the housing crash that surrounded the nation in 2008. The Washington Post reported that in the entire US presidential election scene, Warren remained silent until now. She never endorsed Clinton but she has exhibited her aggression against Trump via her favourite medium, Twitter.

“Donald Trump was drooling over the idea of a housing meltdown — because it meant he could buy up a bunch more property on the cheap,” Warren said. “What kind of a man does that? Root for people to get thrown out on the street? Root for people to lose their jobs? Root for people to lose their pensions?”

In her speech, she also criticised Trump for the plan he proposed regarding dismantling the Dodd-Frank financial rules. “Donald Trump is worried about helping poor little Wall Street?” Warren asked. “Let me find the world’s smallest violin to play a sad, sad song. Can Donald Trump even name three things that Dodd-Frank does? Seriously, someone ask him,” she added.

On his first campaign through a four-day rally in Western Swing on Tuesday, Trump targeted Clinton and her supporter constantly. “You know, Hillary Clinton has somebody. Did you ever hear of Pocahontas? It’s Pocahontas, Elizabeth Warren!” he shouted to the crowd gathered in New Mexico’s Albuquerque. Warren’s statement where she said she was native American was also mentioned in the address of the presidential candidate.

The Daily Mail reported Trump’s sarcasm when he said Warren declared herself as native American to get preference in law school admissions. “She said she was an Indian!” Trump said and laughed. “She said because her cheekbones were so high, she was an Indian! That she’s Native American! … We’re getting wise to what’s happening. It’s a big scam.”

Warren has a big support group from many Democratic constituencies, especially those where Democratic Bernie Sanders has passionate fans.