Following the tragic shooting at Marjory Stoneman Douglas High School in February, which resulted in 17 fatalities, filmmakers Emily Taguchi and Jake Lefferman went to Parkland to document the experiences of the students who survived the attack and the parents who lost their children. “After Parkland” offers a close-up look at how these families cope with the unimaginable, dealing with sudden loss, processing their grief, and seeking a renewed sense of purpose.