It does seem to be. There is a wonderful takedown of "responsible gun owners" by Australian comedian Jim Jefferies here:
https://www.youtube.com/watch?v=0rR9IaXH1M0.
Jefferies comments that Australia took the world record for the worst gun massacre and responded with some very tough gun controls. He then says, "Since then, we haven't had any more gun massacres. I don't know how or why that happened." Consider what the body count would have been if those carrying out two recent Sydney attacks had had M16s rather than knives.
Interestingly, while I was looking at something else, I came across a statistic for Cleveland Police - not the one in Ohio but the one in the north-east of England. It's responsible for policing a population of a bit under 570,000, so about 1.5 times that of the city of Cleveland, Ohio. Since 1893, the English Cleveland Police has lost one officer in the line of duty. The Ohio force's count begins 40 years earlier, but I'm not sure that's enough to explain it being 108, of whom 75 were shot.