The differences are huge. When a person says black power they are calling for people to unite for social equality. When someone says white power they are calling for people to unite in order to keep the country segregated. If a person is pro black it doesn't meant they are anti-white, it means they want to be treated as equals. It's not racist, and it's not descrimination. It's the same when someone says they are pro-gay. White people cannot be victims of racism. We have never had our rights taken away because of the colour of our skin, we have never had to march for equality, and we never will. Racism is alive and well in the world. Saying it doesn't exist is just making it worse.