"The phrase "Black Lives Matter" can refer to a Twitter hashtag, a slogan, a social movement, or a loose confederation of groups advocating for racial justice."
That is true except this one is an organization. Sometimes it is better just to accept you are in a hole and not dig it any deeper.

This is the Official #BlackLivesMatter
Organization founded by Patrisse Cullors, Opal Tometi, and Alicia Garza.