The Carson City School District has announced all classes in the district are canceled today after receiving threats of gun violence. In a letter to parents and media Thursday night, the school district says threats have come in to both local schools and nationwide in a planned social media tik tok campaign named “National Shoot Up Your School Day.” With Friday’s cancellation, officials say they will in effect just be starting the district’s winter break, initially set to begin Monday, December 20, one day earlier.