The Black Lives Matter movement is calling on the Democratic National Committee to hold a special presidential debate to focus on racial justice in America.

The group posted a petition at Color of Change, a progressive nonprofit civil rights advocacy organization, telling DNC Chair Rep. Debbie Wasserman-Schultz, D-Fla., that voters of color "deserve substantive responses and policy recommendations" from the Democratic presidential field.

"It is not enough to poll the presidential candidates on whether or not they think 'Black Lives Matter' or 'All Lives Matter,'" the petition reads.

We're joining Black Lives Matter to demand the Democratic Presidential candidates articulate clear policies to respond to all the issues that matter to Black voters. We deserve a #BlackLivesMatter debate!Posted by ColorOfChange.org on  Tuesday, October 20, 2015

The question of whether "black lives matter" was asked at the first DNC-approved Democratic presidential debate on Oct. 13 in Las Vegas. Only Sen Bernie Sanders, I-Vt. and former Maryland Gov. Martin O'Malley actually said "black lives matter" when asked.

The question was not asked at the first two Republican presidential debates. The Republican National Convention is sponsoring 12 presidential debates during the 2016 election cycle, while the Democrats will hold six.

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As of 2:15 p.m. Eastern time Tuesday, the petition had garnered nearly 630 signatures.

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