http://www.nytimes.com/aponline/2015/07/11/world/europe/ap-eu-bosnia-srebrenica-anniversary.html?_r=0Tens of of thousands came to commemorate the twentieth anniversary of the massacre at Srebrenica during the Bosnian War, including luminaries like Bill Clinton, Ahmet Davutoglu Princess Anne (UK) and Queen Noor (of Jordan).
Unfortunately, this was overshadowed by Serbian Prime Minister Aleksandar Vucic, who came to lay flowers, and instead was pelted with stones and one that broke his glasses.
Serbian Foreign Minister Ivicia Dacic appeared to fan the flames further, suggesting that that the attack on Vucic was an attack on Serbia.