Because back then some of the americans treated black people or people having a different skin colour then white badly. They even formed clubs (KKK) to try and relinquish blacks. Some of them were in favor with getting rid of black people, while others tried to help black people. Thats why they have a black history month to remind people that all of human kind are equals. And how the black community won there freedom of equality.
Good thing we asians came late, cause an eighth of asian population would probaly be down.
Good thing we asians came late, cause an eighth of asian population would probaly be down.





