I suspect if not the world leader, the world leader among wealthy countries (Some South American countries have shockingly high murder rates overall, so those w

I suspect if not the world leader, the world leader among wealthy countries (Some South American countries have shockingly high murder rates overall, so those would be the others to check I think, though those murders might have a different sort of etiology). It would require a little more work to determine, since lower impact incidents in other countries are less reported on English wikipedia than those in the US, and even in the US I suspect they're not comprehensively cataloged.