The Cleveland police officer who shot and killed 12-year-old Tamir Rice last week was previously “distracted” and “weepy” during his firearms qualification training at a suburban Ohio police department, new internal documents revealed Wednesday.

By Joshua Barajas

Sen. Barack Obama's nomination as the Democratic presidential candidate coincides with turning points in American civil rights history. Historians and analysts Mark Shields and David Brooks discuss the progress in American representativeness and the challenges to becoming a post-racial society.