Donald Trump Jr.Donald (Don) John TrumpSarah Huckabee Sanders becomes Fox News contributor PETA billboard in Baltimore calls Kushner a 'rich pest' Dick Cheney to attend fundraiser supporting Trump reelection: report 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 TrumpDavid Axelrod after Ginsburg cancer treatment: Supreme Court vacancy could 'tear this country apart' EU says it will 'respond in kind' if US slaps tariffs on France Ginsburg again leaves Supreme Court with an uncertain future 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 TrumpThe Hill's 12:30 Report: Biden expands lead in new national poll Eric, Lara Trump welcome second baby Trump tweets photo of Trump Tower in Greenland: 'I promise not to do this' 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.