Thousands of people from Bosnia and around the world gathered in Srebrenica to mark the 30th anniversary of a massacre there of more than 8,000 Bosniak Muslim boys and men — an atrocity that has been acknowledged as Europe's only genocide after the Holocaust. Seven newly identified victims of the 1995 massacre, including two 19-year-old men, were laid to rest in a collective funeral at a vast cemetery near Srebrenica Friday, next to more than 6,000 victims already buried there.