The implication is that disunity is a uniquely Black problem. History tells us disunity is a characteristic of humanity, not just Black people. American are not unified, Christians are not unified, white people are not unified, some families aren't even unified.
Of course, I and many of us here, are concerned with Black empowerment and recognize that Black unity is an important component of our empowerment. I just wanted to point out that a focus on achieving Black unity does not mean every other group is, or has been, unified.