I am politically non-aligned. This means I am not a Democrat. I am not a Republican. I am not a Green Party member. I am not a Libertarian party member. I am a party of one; myself.
I don't care if a Black person is a Democrat or Republican or whatever. They have the right to affiliate with whatever party they chose. I only care about one thing: using your party affiliation to advance the causes that you hold more important. Then, if you say your party is better for Blacks, then you have to be knowledgeable enough to support your claim.
If you state other parties don't support Blacks, then, again, support your claim. However, if I know your logic is wrong, founded on false information, misleading, or unable to be supported with facts, I'm going to respond by showing you, with facts, where you are wrong and why you are wrong.
Here is where it comes down to Democrats vs Republicans.
If you are a Democrat and you claim your party is best for Blacks and the Republican party is racist, be prepared for my response where I show where the Democrats have abused Black supporters.
If you are a Republican and you claim your party is best for Blacks and it is the Democrats who are the racists, be prepared for my response where I show where the Republicans have slighted Blacks.
Frankly, both parties have their share of racists and both parties have their faults. As such, I support the individual politicians, not their party. You may find this naive and say that individual politicians will support the party position in office, and I will agree that may be the case. But, I take that into account before I support the individual politician.
Therefore, let us talk about the issues, not the parties. Talking about the parties, in about 90% of the cases, is a big waste of time and keeps "us" divided and unable to find common ground to address issues that can be addressed politically. Political parties are not saviors so don't act like they are saviors. If you do that, I'll really bring the heat.
Of course, many issues cannot be addressed politically and must be addressed otherwise.