His party are trying to brush this off on the basis that "obviously"he meant to refer to "one incident" and not "one murder". I don't know about anyone else, it doesn't seem to me that that makes it a whole lot better. Since when was the murder of 16 children and one adult, and severely injuring 15 other children, an "incident"?
You only have to look at the incidence of school shootings in the UK compared to the US to understand why we need these restrictions. How dumb do you have to be not to realise that?