James Cameron was just 16 years old in 1930, when he survived a brutal lynching attempt in Indiana that left two of his friends dead. The event set him on a decades-long course of activism and advocacy that eventually led him to Milwaukee, Wisconsin, and the culmination of his life’s work: America’s Black Holocaust Museum. Cameron founded the museum in 1988, and in 1994 expanded it to a larger building in the city’s Bronzeville District. Until the mid-20th century, the northside neighborhood had been the bustling commercial and social core…