Does anyone know if thinking of invading my university with guns and killing people is a kind of symptoms of Bipolar Disorder?

I have many, many levels of moral learnings, like, I'm christian and I'm totally against violence. But I think my bad experiences in high school like, peer rejections, and my sick genetics from my mom, that was one of the most healthy kid from a entire sick family, is something that make my mind explode in some fantasies with revange and guns.

I'm totally sure that I'm won't do anything against my parents and friends. But I believe I could be happier without those thoughts.