"President Trump: you referred to countries as shitholes", he says in the ad.
Former Housing and Urban Development Secretary Julián Castro's latest campaign ad is aimed at an audience of one: a sitting president now spending time in New Jersey. The president is expected to be there at his golf club.
The former Housing and Urban Development secretary stands in an empty building and cites Trump's own words - using a crude slur to disdain some countries, telling US congresswomen of color to go back "to the countries" from which they came, and calling immigrants "rapists".
Castro then directly correlated El Paso to Trump's rhetoric.
"Innocent people were killed because they look different from you".
Now, the Trump donors outed by Castro have banded together as the "Texas 44" to raise money for the Trump 2020 campaign.
Castro's campaign manager Maya Rupert said in a statement, "Donald Trump's hateful rhetoric inspired the largest violent attack on the Latinx community in history ..." El Paso residents, officials and other presidential candidates including El Paso native Beto O'Rourke have said the president's words have inflamed hatred and incited violence. Just as with other mass shootings, the discussions turned to mental health and gun regulation, but many have also spoken out about Donald Trump's role in the tragedy.
Trump seemed to be responding to a controversial tweet by Joaquin Castro in advance of the president's trip to El Paso last Wednesday, in which the candidate's brother shared the names of more than three dozen major Trump donors in his San Antonia district, as well as their business interests. "In one voice, our nation must condemn racism, bigotry and white supremacy".
Democratic presidential candidate Julián Castro is trying out a new way to reach President Donald Trump directly - airing an ad on his favorite cable news program.
Trump campaign spokesman Tim Murtaugh dismissed Castro's ad. He called Joaquin, who is chairing Julian's presidential campaign, "the lesser brother of a failed presidential candidate".