If it seems as though black people talk about race so much, that's because America, as a government and as a power structure, has made everything about race, from the moment Columbus landed in 1492 to the recent shooting of Michael Brown at the hands of a cop with institutional power and privilege on his side.
White people will never fully understand how racism impacts the everyday lives of black people and people of color. That's because they benefit from a racial system that enshrines institutional racism and racial prejudice as the rule of law and social order.