challenge: What event was captured in a series of photographs by Don Ultang and John Robinson that won the 1952 Pulitzer Prize for Photography?
  
  A. A riot during a college basketball game
  B. A violent on-field assault against an African American player during a college football game
  C. A protest against racial segregation at a college campus
  D. A celebratory moment after a college baseball game
  Answer: 