Soon, we will enter a new name into the history books: Donald J. Trump, the real estate mogul and entertainer who began his campaign with a screed against Latin American immigrants and who grew in popularity as he promised Americans that he would seal off the country from Mexico.

The nomination of Mr. Trump by the Republican Party will endure in the memory of Latinos in this country for generations to come. Our future historians will write about the Trump campaign and the nativist anger it unleashed with the same sense of hurt that African-Americans feel when they look back on the cruelties of Jim Crow, and that Asian-Americans experience as they contemplate the injustice of the Chinese Exclusion Act.

The Republican convention that began Monday in Cleveland with an hour of testimony about the innocent blood spilled by “illegal aliens” only deepened the insult. Each speaker served as an echo of the words Mr. Trump uttered a year ago when announcing his candidacy at Trump Tower in New York: “When Mexico sends its people, they’re not sending their best,” he said. “They’re bringing drugs. They’re bringing crime. They’re rapists.”

“Only Trump mentions Americans killed by illegals,” said one of the convention speakers, Jamiel Shaw Sr., whose son was murdered by an immigrant in Los Angeles in 2008. “Trump is sent from God.”

Some 11 million people live in the United States as undocumented immigrants. Many speak English as their primary language, and nearly all pay federal and local taxes. But in the vision offered by the Republican Party this week, they are a scourge murdering Border Patrol officers, or unlicensed drivers who drink to excess and kill American citizens.