More diversity (in neighborhoods, in workplaces, in schools) would certainly helpNever heard the term "there goes the neighborhood"? America is segregated today not because of white people, as in fact black people are far more prejudiced and racist than white people (and there is mounds of evidence to support this). But rather because you have a town thats nice, and then black people start moving in and the neighborhood town or city quickly starts going south, fast, almost without fail. Why? Because blacks make up 12% of the US population but commit half of all murders and more than half of all robberies. It's really amazing when you look at the crime statistics out there, and the amazingly consistent correlation between the percentage of black people in a certain area, and how (un)safe and (un)pleasant that area is to live in.
There will never be a unified "us" as long as a significant portion of black people continue to behave the way they do and force white people to flee to safer ground. Plain and simple. The only people who truly support that "diversity" baloney are either people who have never actually had to live with it, or have something to gain from it politically or financially.
Abraham Lincoln supported black colonization for a good reason; unfortunately nobody likes to talk about that when they talk about him though. Obviously forced colonization is a stupid and immoral idea, but voluntary segregation is, unfortunately, what will end up being best for us until more black people start getting their act together.
EDIT: Truth hurts I see. I guess it's much easier for most people to hide comments that offend them rather than responding with an intelligent counterpoint or pointing out where you think they're "wrong".