Nicely cherry-picked.
The disastercenter.com has a fairly comprehensive table about all sorts of crimes from 1960 to 2016. Its source is the Uniform Crime Reporting (UCR) Program. The UCR is produced from data received from over 18,000 law enforcement agencies voluntarily participating in the program. Unfortunately it has no statistics concerning privately owned guns covering that time span, probably because they don't exist.
I used the data in the murder column and turned them into this graph:
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Can anyone see a consistent correlation between gun ownership and murder rates? Is it conceivable that the level of privately owned firearms in 1963 was the same as in 2014? Was there an unreported massive reduction in the ten years following 1963, an unreported approximate plateau for two decades after that and an upsurge for the next six years? And what's with the uptick of murder rates in 2015 and 2016?
Looking at total violent crime for that period, a correlation with private gun ownership is equally difficult to imagine.
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To me it seems that factors other than gun ownership play a much more significant part in determining murder and general crime rates. This cuts both ways, of course. While the "more guns - less crime" mantra obviously lacks substantiation, a total gun ban won't fix the problem either, but then not many people are campaigning for that. Gun controls, however do make sense. Assault style weapons and bump stocks are only good for killing a lot of people in the shortest possible time. Taking them out of circulation should reduce the toll incurred during mass shootings. A requirement to keep guns locked up when not in use should reduce accidental shootings. The requirement of having every gun registered and its owners identified in a national database should, in conjunction with a national register of individuals who have significant mental problems, keep those things out of the hands of the Elliott and Cruz types. As I mentioned
here, of the 292 guns used in the 150 mass shootings since the Texas tower incident at least 167 (57.2%) of mass shooters’ weapons were obtained legally and 49 (16.8%) were obtained illegally. It’s unclear how 76 (26%) weapons were acquired.