White and Black Americans have fought in one way or another, side by side in the Union Army, in World War I and II, in Korea, Vietnam, Iraq and Afghanistan, only to return to their own separate neighborhoods, separate houses of worship and their own separate lives. Black and White Americans, for the most part, simply do not live in the same society and do not see the world around them in the same way.
I have just left the Young Vic in London where the Act for Change project took place. It's started after actor Danny Lee Wynter watched a trailer from ITV for their impeding TV releases and saw all white characters and decided along with his partners, a group of actors of all colours genders and ages, that enough is enough and something had to be done.
A modern economy needs a constant flow of new labour -- both skilled and unskilled -- and immigration is the only way to get it. Germany, UK and America have built their economies on this and I met a lady from Silicone Valley, the centre of America's IT industry who said her industry's message to the US Government is simple: "give us more Indians."