 | This is a non-diffusing subcategory of Category:Mass shootings in the United States. It includes mass shootings that can also be found in the parent category, or in diffusing subcategories of the parent. |
| This is a non-diffusing subcategory of Category:Mass shootings in the United States. It includes mass shootings that can also be found in the parent category, or in diffusing subcategories of the parent. |