Yep. But I must make a correction. There was a second killer (Dylan Klebold) involved in the massacre, not just Eric Harris. And mainly, the massacre was caused by these same idiots discussing about acts of terrorism on a blog closely associated with a website that provided user-created Doom levels (made by them also).
2NDCORRECTION: Dead Space is a third-person shooter, not the opposite end of the stick. (See how I parodied my username to make the subheading?)