#massshooting #ohio #2024 Michigan State students call to stop mass killings, after a gunman killed three students and wounded five more. Former Governor and UN Ambassador Nikki Haley enters the presidential race. And officials are giving Ohioans an update on how a train wreck could affect the air, water and soil. SUBSCRIBE to ABC News on YouTube: https://bit.ly/2vZb6yP Latest updates: http://abcnews.go.com/
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