(CNN) The father of a Muslim-American soldier who was killed in the Iraq War delivered a passionate appeal at the Democratic National Convention for voters to support Hillary Clinton, accusing Republican Donald Trump of sacrificing "nothing" and "smearing the character" of religious minorities like his family.

Khizr Khan, whose son, Army Capt. Humayun Khan, 27, died from a suicide bombing in Baghdad 12 years ago, said that if Trump is able to follow through on his proposal to ban Muslims from entering the country, his late son never would have been able to come to serve the country in the military. The Khans, a Muslim family, immigrated to the United States from the United Arab Emirates.

"Have you ever been to Arlington Cemetery? Go look at the graves of the brave patriots who died defending America -- you will see all faiths, genders and ethnicities," he said. "You have sacrificed nothing and no one."

Speaking on the fourth and final night of the convention, Khan's remarks set the tone before Clinton accepted the party's nomination.

Kahn's focus on the contributions from immigrants -- a direct rebuke to Trump's proposals -- spoke to the heart of who Clinton says she is, emphasizing a core message from the campaign that Trump's plans to restrict immigration would end up hurting more than it helps.

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