I would not be surprised if BLM were co-opted by a COINTELPT type group. If I remember correctly BLM started out pretty reasonable, now they're the go-to when you want a stupid college protest.
The US has an extra special hate boner for civil rights groups, especially black ones.
The funding is also pretty suspicious. A bunch of rich, white patriarchs the groups is supposed to hate.
Look at who they target, both in terms of people and organizations.
-Reasonable college professors (can't have that!)
-Bernie Sanders (their best representative in the upcoming election...why him?)
-People calling for equality between all races
-Journalists trying to shed light on BLM
-Essentially anybody trying to take a rational stance on their issues
Even if they're not being actively co-opted, they're definitely playing right into someone's hands.