martin luther king Jr day

i love martin Luther king Jr so his birthday means a lot to me.The first time i heard of it was a while ago. I looked at my calendar and saw something strange it said martin Luther king Jr day.So i asked my mom and she said' well after the black people were free some people were still treating brown people bad"so he had this great speech and the other stuff my mom said i had to wait till i''m older to here. put that's the story on martin Luther king Jr day.