Relatives and friends of Eduardo Felipe Santos Victor, a teenager who was shot dead in Morro da Providencia, a low-income favela community, mourn during his funeral in Rio de Janeiro, on Sept. 30, 2015.
First responders transfer patients from ambulances to Broward Health Medical Center in Ft. Lauderdale on the afternoon of Feb. 14. The hospital was on lockdown after receiving victims of the shooting at Marjory Stoneman Douglas High School.
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Spent bullet casings litter a road after authorities reported a gunbattle outside Mazatlan, Mexico, in July 2017, a year marked by the highest homicides in at least decades.
Mario Rivera Alvarado/AP
Rick Johnson visits a scenic shoreline in Seattle that's home to A Sound Garden, an outdoor sculpture. The area used to be a popular destination until access was restricted after Sept. 11.
Vanessa, currently homeless, rests on a Rio de Janeiro street on Friday where construction of a new light rail system has been delayed. The state government of Rio de Janeiro today declared a state of "calamity" ahead of the Rio 2016 Olympic Games which begin August 5.
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Worcester Polytechnic Institute professor Susan Landau is sworn in alongside Apple General Counsel Bruce Sewell (left) and New York County District Attorney Cyrus Vance at a congressional hearing on encryption on March 1.
Samuel Corum/Anadolu Agency/Getty Images
Computer chips are seen on newly-issued credit cards. In an effort to reduce counterfeiting and credit card fraud, more than 200 million payment cards have been issued with embedded computer chips in the U.S. ahead of an Oct. 1 deadline, according to the Smart Card Alliance.
Canadian-born Omar Khadr is seen in a courtroom sketch during a 2010 hearing at the U.S. military prison at Guantanamo Bay, Cuba. He was moved to a Canadian prison in 2012.