From The Impressions' eponymous 1968 album, this was written and produced by group member Curtis Mayfield.
The following info. about Curtis Mayfield and his role in the civil rights / black pride movement is taken from Wikipedia: http://en.wikipedia.org/wiki/Curtis_Mayfield
The Impressions reached the height of their popularity in the mid-to-late-'60s with a string of Mayfield compositions that included "Keep on Pushing," "People Get Ready", "It's All Right" (Top 10), the uptempo "Talking about My Baby" (Top 20), "Woman's Got Soul", "Choice of Colors,"(Top 20), "Fool For You," "This is My Country" and "Check Out Your Mind." Mayfield had written much of the soundtrack of the civil rights movement in the early 1960s, but by the end of the decade he was a pioneering voice in the black pride movement along with James Brown and Sly Stone. Mayfield's "We're a Winner", a Number 1 soul hit which also reached the Billboard pop Top 20, became an anthem of the black power and black pride movements when it was released in late 1967 much as his earlier "Keep on Pushing" (whose title is quoted in the lyrics of "We're a Winner" and also in "Move On Up") had been an anthem for Martin Luther King, Jr. and the Civil Rights Movement.