The Black Lives Matter (BLM) political and social movement begins in the US, and quickly spreads worldwide, when George Zimmerman is acquitted of second-degree murder after fatally shooting 17-year-old African American Trayvon Martin in Florida. The initiative gains further traction following the deaths of several other African Americans by police actions or while in police custody. The BLM movement seeks to highlight discrimination and racial inequality experienced by black people and to promote anti-racism. Within years, it becomes one of the largest movements in the US.