This is a heavy-hearted topic to address, but one that nonetheless has tainted American history. Mass shootings have been around for a long time, but unfortunately, without proper gun control legislation, these tragic events don't look like they are going anywhere. Carried out increasingly by young men who also often suffer from serious mental health or substance abuse problems, these attacks continue to plague the country.
In this gallery, we look through the dark history of mass shootings in the US. Click through the gallery to learn more about these tragedies.