It’s already been five years since the death of Trayvon Martin, whose killing helped ignite the Black Lives Matter movement. Martin, an unarmed 17-year-old black male from Sanford, Florida, was shot by neighborhood watch volunteer George Zimmerman. Zimmerman claimed self-defense and was acquitted of a second-degree murder charge. What started as a hashtag has drawn national and worldwide attention to African-American rights. According to a 2016 Pew Research Center survey, general awareness of Black Lives Matter is common among black and white U.S. adults, but attitudes about the movement vary greatly.