Black Lives Matter is a twenty-first-century global, Afrocentric political movement that targets state-sanctioned interpersonal and structural violence against black people. It started in 2013 after the acquittal of George Zimmerman for killing unarmed 17-year-old black teenager Trayvon Martin and gained prominence in 2014 after the police killings of Michael Brown in Ferguson, Missouri, and Eric Garner in Staten Island, New York. Black Lives Matter solidified its position as a global movement after the summer 2020 protests against the police killings of Breonna Taylor and George Floyd and the vigilante killing of Ahmaud Arbery. What began mainly as a protest movement eventually incorporated over 200 grassroots community organizations and dozens of official and unofficial chapters worldwide. Three queer, black women (Patrisse Cullors, Opal Tometi, and Alicia Garza) founded the movement and committed to a decentralized leadership structure that focuses on collective action at the community level. Though it is the latest in a long history of Black Liberation movements, BLM differs from prior movements in many ways, including the widespread use of technology and social media and centering critical, queer, intersectional praxis. In addition to dismantling white supremacy, Black Lives Matter works toward radical collective healing from historical, intergenerational, and systemic trauma resulting from state and vigilante violence.