A woman looks at the crime scene as police officers stand guard in the village Dubona, near Mladenovac, Serbia, on Friday. Photograh: Andrej Cukic/EPA There is a risk mass shootings may rise in Europe due to the spread of the cultural concept from the United States and the proliferation of weapons, experts in gun violence have warned in the wake of two attacks in Serbia. In the space of two days, a 21-year-old was arrested on suspicion of killing eight people and wounding 14 in a drive-through rampage through several villages and a young teenager was accused of killing eight...