claim: "Trump is running on a set of policies and promises that are white supremacy."
white supremacy: "a political ideology that perpetuates and maintains the social, political, historical and/or industrial domination by white people" (thanks wikipedia)
The most direct support for the claim comes in the form of specific policy proposals. There are two sorts: those that serve to enrich or empower white people and those that serve to diminish other races seen as in opposition to white people. Of course, these policies need not be perfectly direct, specific, or clearly articulated as white supremacy in order to qualify. E.g. I'm assuming that we can all agree that poll taxes were a form of white supremacy, despite not specifically targeting people on the basis of race, not directly harming anyone, and (in some cases) not motivated out lout by a desire for racial dominance.
The second lines of support