SIOUX FALLS, S.D. — Students at some South Dakota schools joined their counterparts around the country in a walkout to take a stand against gun violence.

The walkout happened at 10 a.m. Wednesday and comes one month following the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Florida. Some of the demonstrations lasted 17 minutes — one minute for each of the 17 students and staff members killed in Florida.

Students in Sioux Falls, Rapid City and Aberdeen were among those who took part in the walkout.