AFGHANISTAN-UNREST-SPORT-ETHNICITY

This photo taken on April 5, 2017 shows Afghan mixed martial arts (MMA) fighter Ahmad Wali Hotak (L) during a training session at a gym in Kabul. A martial arts bout in Afghanistan was billed as a bare-knuckle duel for supremacy, but it has become a lightning rod for long-simmering ethnic rivalries that threaten to tear the country apart. Ahmad Wali Hotak, a Pashtun, last month threw down the gauntlet to his longtime Tajik rival Baaz Mohammad Mubariz on Facebook, in what was expected to be an electrifying contest between two of Afghanistan's finest athletes. / AFP PHOTO / SHAH MARAI / To go with Afghanistan-unrest-sport-ethnicity,FOCUS by Anuj Chopra (Photo credit should read SHAH MARAI/AFP via Getty Images)