How do you create a Unity paradigm?
How about a statement of purpose and principles?
The original colonies had constitutional conventions and hashed out a unifying document.
E Pluribus Unum - From Many One.
Newt Gingtrich had the Contract With America.
If somebody can put together a million man march, can't someone put together a black "constitutional convention"? The purpose of which would be to articulate collective goals and preferred methods and strategies to achieve them. It seems like you would need to do something like this before you could have something like a Black Congress.