I'd love to see the distribution on those retributions

This article claims that El Salvador's first murder free day in almost 3 years is due to a change in security measures. I'm a little more skeptical. Clearly the murder rate isn't bound above zero. It might be unlikely given their homicide rate of 66 per 100k, but there is nothing that leads me to believe that it might not happen randomly (in fact I think it just might have). Making an attribution like this would be very well backed up by reporting a homicide rate that has fallen since the new measures have taken place.