Flags are at half-mast today nationwide to honor the victims of a mass shooting that occurred on Wednesday at a Catholic school in Minneapolis, where two children were killed and at least 17 others injured. This act of lowering flags is a sign of respect and mourning for the victims of this senseless violence, as ordered by a presidential proclamation effective from Wednesday until sunset on Sunday. Additionally, Louisiana and Kansas have their own observances, with Louisiana commemorating the 20th anniversary of Hurricane Katrina and Kansas paying tribute to a deceased respected judge.