(Trent Nelson | The Salt Lake Tribune) High school students staged a die-in at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students gathered at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018. Amanda DeMelo(Trent Nelson | The Salt Lake Tribune) High school students staged a die-in at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students staged a die-in at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students gathered at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students staged a die-in at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students staged a die-in at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018.(Trent Nelson | The Salt Lake Tribune) High school students gathered at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018. Brynna Dow, Olivia Bee, Chloe Harris, and Amanda DeMelo(Trent Nelson | The Salt Lake Tribune) High school students gathered at the Utah State Capitol in Salt Lake City to mark the anniversary of the Columbine High School massacre and call for action against gun violence, Friday April 20, 2018. Olivia Bee, Chloe Harris, and Amanda DeMelo