Why do we find it necessary to have a "Black History" month?

Now before you get all bent out of shape and label me a racist, hear me out. I have no problem celebrating the accomplishments of black people. There have been countless black members of society that have made amazing contributions all throughout our nation's history. But why have a month for it? Why not just learn about them, give them credit, and be happy that they did what they did all throughout the year. We don't find it necessary to have an "Asian History" month, or an "Hispanic History" month, or, God forbid, a "White History" month. Since when do we simply cater to the black population. I understand that people will always feel bad about slavery. Me too. It was terrible, and awful, and atrocious, and never should have happened, and oh, by the way...IT ENDED 150 YEARS AGO! So come on, folks, seriously, let's move on, celebrate the greatness of all people, regardless of race or gender or religion. Comments anyone?