http://abc7.com/news/president-obama-responds-to-san-bernardino-shootings/1107280/
It does seem to happen more often since Obama was elected for some strange reason.
” It does seem to happen more often since Obama was elected for some strange reason.”
Because he and the media cartel see an opportunity to enact strict gun controls. So they push for more mass shootings. They do it by publicising the heck out of existing ones.
It is a well known phenomena, known as the copycat effect.