Since 1995 (the year after the 1994-2004 Assault Weapons Ban), the FBI has maintained a very detailed list of how many people have died at the hands of assault weapons and/or rifles, which are merged into the same group. Therefore, we can make a solid comparison on what gun violence looks like.
In 2014, you are 67% less likely to be murdered by an assault weapon or rifle than you were in 1995.
Averaging out all years of the Assault Weapons Ban (1995 – 2003), we find that Assault Weapons/Rifles were used in 3.29% of all murders in the US, including mass murders and other crimes.
In the 10 years following the sunset of the ban (2005 – 2014), we find that Assault Weapons/Rifles were used in 2.62% of all murders in the United States. Therefore, there was a sizable decrease in the frequency of deaths caused by Assault Weapons/Rifles.
The media on both sides will try to make different narratives about guns, violence, and what actions need to be taken. Both sides are, and have knee-jerk reactions to tragedies. What I fear is that laws will be created and borne out of feelings and emotions rather than solid, empirical evidence. As per the FBI, this is the data we have available, and it does not suggest in any way that another ban or restriction will have any meaningful effect on murder, mass murder, or violence in America.
I would suggest, then, that murder and violence in America has a deeper systemic issue that will not be solved by reactionary laws.
Spreadsheet source for data provided in article : https://docs.google.com/spreadsheets/d/1rMvH0wvt4qqmU86FZYgIQLMzUK-xWpTmYsp8IY6Cm-w/edit?usp=sharing