Why are Black Lives Matter activists disrupting Bernie Sanders' appearances and what effects?

I mistakenly posted this in the GD thread about “All Lives Matter”, but it probably belongs here:

Update: The splinter group is called Outside Agitators 206. This was posted on Johnson’s Facebook page:

“The white liberal differs from the white conservative only in one way. The liberal is more deceitful than the conservative. The liberal is more hypocritical than the conservative. Both want power, but the white liberal is the one who has perfected the art of posing as the Negro’s friend and benefactor, and by winning the friendship and support of the Negro, the white liberal is able to use the Negro as a pawn or tool in this political football game. Politically the American Negro is nothing but a football, and the white liberals control this mentally dead ball. Through tricks of tokenism and false promises, and they have the willing cooperation of Negro leaders. These leaders sell out our people for just a few crumbs of token recognition and token gains” -MALCOLM X

If you are stanning for Bernie Sanders and are upset that he got shut down but you haven’t been putting the same passion behind Black Lives you really need to reevaluate more than your political party.

There have also been tweets against Sanders with the hashtags: #BowDownBernie and #FreePalestine. I’m not sure what to make of it, but there are plenty of CTs going around.