Black people: do you believe in order for blacks to progress they should be united?

I think black people need to start supporting each other because any other race (ESPECIALLY white people) will support their race to the fullest. They will support their businesses, educate their youth, and even vote them in office. We don't, and that's why we need to dump the slave's mentality before we are left too far behind. We're already behind right now, and if we don't stop sleeping we will be the underdogs of the underdogs.