Supporters of presumptive GOP nominee Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE are more likely to view African-Americans negatively, according to a new Reuters/Ipsos opinion poll.

According to the poll, those who back Trump's White House bid are more likely to describe African-Americans as "criminal," "unintelligent," "lazy" and "violent" compared to voters who supported other Republican candidates in the primary or voters who back presumptive Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE.

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Significant numbers of Americans also view blacks more negatively than whites, according to the poll, but Trump supporters were the most critical.

Nearly half of those supporting Trump said African-Americans were more "violent" and "criminal" than whites. About 40 percent described African-Americans as more "lazy" than whites.

Among Clinton supporters, about one-third view blacks as more "violent" and "criminal" than whites. About one-quarter said blacks were more "lazy" than whites.

Slightly more than one-third of Trump supporters said they would prefer to live in a community with people from "diverse cultures." About 70 percent of Clinton supporters said the same.

Among Trump supporters, 31 percent also said they "strongly agree" that "social policies, such as affirmative action, discriminate unfairly against white people." Only 16 percent of Clinton supporters said the same.

About one-third of Trump supporters viewed whites as more "intelligent" than blacks, and about 40 percent viewed whites as more "hardworking."

Only 22 percent of Clinton supporters rated whites as more "intelligent" than black people and 25 percent said whites were more "hardworking" than blacks.

Still, not more than 50 percent of Trump supporters rated blacks negatively compared to whites, though Trump supporters were more critical of African-Americans than were supporters of other candidates.

The poll was conducted during two periods between March and June among 16,000 Americans.