Donald Trump Jr.Donald (Don) John TrumpTrump Jr's 'Triggered' debuts at No. 1 on NY Times bestseller list GOP motions to subpoena whistleblower University of Florida student government president faces impeachment over Trump Jr. appearance MORE took the stage at his father’s rally in El Paso, Texas, Monday night and told the young conservatives in the crowd they didn’t “have be indoctrinated by these loser teachers that are trying to sell you on socialism from birth.”

President TrumpDonald John TrumpGOP senators balk at lengthy impeachment trial Warren goes local in race to build 2020 movement 2020 Democrats make play for veterans' votes MORE’s eldest son has been one of the top campaigners for the president's reelection bid and warmed up the crowd for him in between chants of “USA!”

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“I love seeing some young conservatives, because I know it’s not easy,” Trump Jr. told the crowd. “Keep up that fight. Bring it to your schools."

“You don’t have to be indoctrinated by these loser teachers that are trying to sell you on socialism from birth, you don’t have to do it,” he said as the crowd cheered him on.

Trump Jr. and Eric TrumpEric Frederick TrumpEric Trump on impeachment hearing: 'This clown show is horribly boring' The Hill's 12:30 Report: Washington braces for public impeachment hearings Donald Trump Jr. writes about Trump family 'sacrifices' during trip to Arlington National Cemetery: book MORE have taken lead of the Trump Organization since their father won the 2016 election. 

Trump used the Monday night rally to continue his push for a wall at the U.S.-Mexico border. 

He alleged that El Paso became safer since the city built a border wall, though Mayor Dee Margo (R) has refuted those claims.

Former Rep. Beto O’Rourke (D-Texas), a potential 2020 candidate, held a rally in El Paso at the same time as Trump's, pushing back on many of Trump's claims regarding immigration and border security.