President Joe Biden was 12 years old in 1955 when Emmett Till was kidnapped, tortured, shot, and thrown into the Tallahatchie River, in Mississippi. Till's murder sparked the modern Civil Rights Movement. This week, Biden signed a proclamation to create three federal monuments to honor the martyred boy and his mother-turned-activist Mamie Till-Mobley. Biden's proclamation comes at a time when American racial justice is mired in a dance of two steps forward, one step back. The country is divided. And race, once again, is the battlefield. In a step backward, Florida passed legislation for its public school curriculum which would...