Gunman is loner, a Korean, and allegedly uses weapon models familiar to players of the Counterstrike video game.
These are the times when I have to wonder if creating violent video games is really solving the problem or creating them, even if I firmly believe in the former in the past.
EDIT: It seems like the developing story labels the incident as a love revenge affair. Be that as it may, it certainly does not reduce our burden on whether promoting this violent culture is such a good idea.