Black Lives Matters is important because companies discriminate against black people and there is police discrimination and brutality against black people and whoever the police deem undesirable in the US, not just in one or two regions, but in every sizeable city in the US. So it's hard to see your friends discriminated against and employers (the only entity with enough political power to effect change in the us) making the problems worse. And amazon and other tech companies fund city council seats and fuel tons of money to defeat referendums that hurt their profit. Yes, ideally politics would be fought over outside the corporate sphere but due to politicians mostly only listening to corporations in the US at the federal and city level, that isn't possible.