It couldn’t possibly be that they overplayed the race card and embraced a set of policies that are antithetic to American values.
One would ask, why did a conglomeration of Soros backed groups and other wealthy leftist organizations give over a hundred million dollars to a "grassroots" organization recently?
Because they aren't a grassroots organization. They are meant as street muscle.
Here is an excellent video from Bill Whittle that puts things in the proper perspective:
"Black Lives Matter Kills People" by Bill Whittle
It is a 7 minute video which puts it in context, and explains much.