Serbs march on Belgrade in droves after back-to-back mass shootings

Tens of thousands of people marched through the Serbian capital, Belgrade, and blocked a key bridge Friday in the second large protest since two mass shootings that rattled the Balkan country and killed 17 people, including many children. Protesters gathered in front of the Parliament building before filing by the government's headquarters and onto a highway bridge spanning the Sava River, where evening commuters had to turn their vehicles around to avoid getting stuck. At the head of the column