Registering black people to vote was only part of Bob Moses' job 40 years ago in Mississippi, where he and fellow civil rights activists ran Freedom Schools as an antidote to the poor "sharecropper education" being afforded descendants of slaves. Now at the helm of the Algebra Project, a Boston-based mathematics program aimed at demonstrating that black students can learn, Moses is at the forefront of a new movement, one to have quality public education declared a civil right.