We can certainly pick apart any given data point.

It doesn't change the overarching sentiment that guns are a subject that attracts considerably larger attention in the USA than in any other 'developed' nation.

Pick any number of metrics - frequency of incidents, size and power of advocacy groups, political debate, ownership levels, media coverage, constitutional significance - and that pattern is clear.

So my [here refined] point remains : there is no (developed nation) where guns are a greater part of public discourse than the USA. Therefore, when we find ourselves questioning "why are some USA citizens quite passionate about the debate?" (especially where their children are concerned), I don't think we need to look too far for the answer.

That is true for both sides of the debate.