Black Lives Matter: A Movement in Photos

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ABC News takes a look back at the Black Lives Matter movement. The phrase "Black Lives Matter" was born in a Facebook post by Alicia Garza in response to the July 2013 acquittal of George Zimmerman, who fatally shot Martin. The movement emerged as a reaction to the perceived violence and systemic racism by police toward African-American communities.

The photo above was taken as demonstrators attempt to make their way onto Interstate 277 to block traffic as they march in the streets amid a heavy police and National Guard presence as they protest the death of Keith Lamont Scott, Sept. 22, 2016, in Charlotte, North Carolina.