Category:Mass shootings in the United States by decade
 | 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 container category. Due to its scope, it should contain only subcategories. |
Subcategories
This category has the following 11 subcategories, out of 11 total.