The world celebrates February 14 as Valentine's Day, but for the people of Parkland in the US state of Florida, it was a day to remember the 17 high school students and teachers who were shot dead by a former student.

A year since the incident, the debate over gun laws continues. But little has changed. The number of Americans who want stricter gun laws has fallen from 71 percent a year ago to 51 percent today.

Al Jazeera's Heidi Zhou-Castro reports.

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