Identity Politics.

The problem with identity politics is not class but divisiveness. If Black Lives Matter were Marginalized Lives Matter they would have a much more saleable product. As soon as any group no matter how important their grievance is, puts that grievance against the rest of the world as special for their group the rest of the world will identify a similar grievance for a group and create an us vs. them situation. 

How about Victims of Law Enforcement Discrimination Matter?  Anyone jailed by a corrupt judge, stopped and frisked by a cop, was a victim of civil forfeiture, women stopped and propositioned by a cop, or a bunch of other things that disproportionately affect blacks and hispanics now have a common cause. Sure the most affected will lead the way but not draw attention to their group for discrimination.

Advocacy politics has a place but only when they make common cause with all in the same situation. If the Hispanic Caucus, and the Black Caucus and the poor feminists caucus were working with Warren, Sanders and others to break the banksters that prey on them all they would have a much stronger political story to tell. One of the reasons Black Lives do not matter is that for decades they have been redlined out of the middle class by the banksters. The enemy is not the white male supremacists or even the white supremacist cops, it is the banksters who kept blacks and to a lesser extent Hispanics and single women locked in the ghetto even when it is a nicer ghetto.