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Thousands take part in the Justice for All March and Rally on Pennsylvania Avenue to the US Capitol in Washington, DC, on December 13, 2014, to protest the killings of unarmed African-Americans by police officers and the decisions by Grand Juries to not indict them. AFP PHOTO / SAUL LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)
Thousands take part in the Justice for All March and Rally on Pennsylvania Avenue to the US Capitol in Washington, DC, on December 13, 2014, to protest the killings of unarmed African-Americans by police officers and the decisions by Grand Juries to not indict them. AFP PHOTO / SAUL LOEB        (Photo credit should read SAUL LOEB/AFP/Getty Images)

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    Poll: 49% of Americans say racism is a 'big problem'

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Poll: 49% of Americans say racism is a 'big problem'

CNN's Don Lemon discusses a new poll about race relations in the U.S., and he compares the results to a poll taken 20 years ago.

Poll: 49% of Americans say racism is a 'big problem'

CNN's Don Lemon discusses a new poll about race relations in the U.S., and he compares the results to a poll taken 20 years ago.