 The broader movement and its related organizations typically advocate against police violence towards black people, as well as for various other policy changes considered to be related to black liberation.In 2013, the movement began with the use of the hashtag #BlackLivesMatter on social media after the acquittal of George Zimmerman in the shooting death of African-American teen Trayvon Martin in February 2012.The movement became nationally recognized for street demonstrations following the 2014 deaths of two African Americans