I agree with you largely, but one point you might consider is that in modern day politics, like minded groups band together to support one another's cause. This unity brings strength and this is how groups like the Clinton Campaign have done so well. One of the biggest problems I see with Libertarian's is how they so often fail to unite as such. A house divided against itself cannot stand. I would think BLM makes a fairly good fit, the challenges they present to the state are very important to Liberty. I also think that Liberty is not a political party, rather it is a concept that all political parties need to keep in mind. So I agree and support your notion of teaching and enlightening.
RE: Video: Libertarianism and Black Lives Matter