Last night's especially very special episode of Glee took on the hot-button topic of school shooting. A series of gunshots put everyone in William McKinley High School in lock down. No one was actually shot, so the episode was kind of inert and lacking the sort of catharsis that would come from watching people on Glee die.
In the end, it turned out that Becky did it. Becky is Glee's resident character with Down syndrome. Her reason for bringing a gun to school and accidentally discharging it in coach Sue Sylvester's office went like this:
"I was scared, Coach, about graduating, being out in the world with no one to protect me...I wanted to be prepared and protect myself. I need help."
And so, to protect herself from the future, the girl with Down syndrome brought a gun to school.