355th Mass Shooting in US

Alright, I'm gonna try to be as gentle as possible and let's all try to stay civil. But US, please get your act together. There's a reason the BBC called the San Bernadino shooting "another day in the US". It's becoming insane how many times we see on the news "shooting" and "US". Personally, as a Canadian, I'm anti-gun, UNLESS there is a system that thurougly tests the individual and is 100% sure that this gun will be used for defence and not against humanity. I want to hear your thoughts on fun violence in the US (and only US).