Stone-throwing crowd chases Serb PM from Srebrenica commemoration

BELGRADE (Reuters) - Serbian Prime Minister Aleksandar Vucic was chased out of a ceremony marking the 20th anniversary of the Srebrenica massacre on Saturday by a crowd throwing stones and bottles. It was not clear whether Vucic had left the site altogether, but his delegation was seen running for their cars on a hill above the cemetery. (Writing by Matt Robinson; Editing by Andrew Heavens)