Man, I'm pro-gun but the way the y-axis on that chart have been selected is deliberately misleading. Not to mention it surely should compare ownership and not just sales.
This kind of thing does not help the cause.
right it seem to have required an increase of ~500% in gun sales to decrease violent crime rate by ~50%
if it saves even one life it is a victory .. here is a fact for ya :: if you do not like our constitution and do not want to abide by it, then you should move to a country that does have a constitution you like and will abide by. ... there ya go your problem is solved.. go feel safe.