Mourners gather outside the State Library of Victoria in Melbourne, Australia after a 28-year-old Australian-born man, Brenton Tarrant, appeared in Christchurch District Court on Saturday charged with murder for killing 49 people at mosques in Christchurch, New Zealand. The attack is the worst mass shooting in New Zealand's history.
The scene on the main road of Nawa-i-Barakzai district center in Helmand province, Afghanistan, on Aug. 2. The Taliban held the area from October 2016 to July 2017.
A candlelight vigil in memory of the victims of the Pittsburgh synagogue shooting on the steps of Queens Borough Hall in New York on Oct. 29. (Stephanie Keith/Getty Images)
