Long story short, the more guns available, the higher death rate there'll be due to firearms. It's simple to see that the more people available to guns, will be more likely to use them not for defensive purposes, rather for crimes. Statistics show that the crime rate from America with firearms is one of the highest.
In other countries such as Scotland and Canada it is practically impossible to own a gun while in America it's very easy to own one. Over 5,000 children died from firearms in 2008 and its mainly because of the accessibility to own a gun. 20 more have died including a 7 year old girl. Putting restrictions and making it hard for guns to be obtained would easily stop crimes and death rates. Making one thing a bit harder to obtain would change crime rates drastically.
Although the image quality is bad, you can clearly see what the statistics are due to firearms. This image shows the numbers of crimes and deaths that are cause by guns in general. You can see that some numbers are really just baffling such as the 17,352 people who've committed suicide with a gun.
Florida legislature finally passes a bill which enforces gun control. Yesterday was a great day for those who have been affected by the Florida school shooting. Gun control has now been enacted and now it will guns much harder to be obtained in Florida.