The deadly mass shooting in Parkland, Fla., at Marjory Stoneman Douglas High School a year ago renewed the U.S. national debate on guns and school safety, and turned some victims' parents and surviving students into political activists. Memorials are scheduled to take place tonight.

Fitness Sale! Up to 50% Off Men''s Tech Shirts, Shorts and More at Shop Now!

More videos

PBS NewsHour 20 Mar 2019 02:42 CET