Police officers walk the scene in the Greektown neighborhood of Toronto on Sunday night. Police say a gunman opened fire on people in a restaurant. Three people are dead including the gunman, police reported.
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Some firefighters, paramedics and police officers say the tragedies they respond to haunt them, leading to depression, job burnout, substance abuse, and more.
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Susan Nelson, author and public speaker on brain injury awareness and gun safety, at her home in Austin, Texas. Nelson survived a point-blank gunshot to the head in 1993.
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Demonstrators march toward Las Vegas City Hall during the March for Our Lives rally last month in Las Vegas, where 58 people were killed in an October 2017 mass shooting.
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(Left) Stacy, and sister Tracy reminisce over a collage of photos of Maleak Coffin, who died three days after being shot in December. The blanket was gifted to the family by Maleak's girlfriend, Marshay Walker.
As a New Jersey state trooper stands guard nearby, Gov. Phil Murphy unveils his 2019 budget. In April, Murphy signed an order making gun violence data more accessible. (AP Photo/Mel Evans)
Dr. Garen Wintemute at the University of California, Davis, Medical Center, says of the new authority given to the Centers for Disease Control and Prevention: "There's no funding. There's no agreement to provide funding. There isn't even encouragement."
Protest signs for a "March for Our Lives" rally sit on a table in Murray, Ky., just south of Marshall County. The community here is recovering from a school shooting — and trying to start a conversation about gun violence and gun regulation, in a region where gun ownership is widespread