[["The originators of the hashtag and call to action, Alicia Garza, Patrisse Cullors, and Opal Tometi, expanded their project into a national network of over 30 local chapters between 2014 and 2016. The overall Black Lives Matter movement is a decentralized network of activists with no formal hierarchy", 11.0], ["In 2013, Patrisse Cullors, Alicia Garza, and Opal Tometi formed the Black Lives Matter Network. Garza described the network as an online platform that existed to provide activists with a shared set of principles and goals.", 2.0]]
who founded black lives matter movement
history