While the results of a real study may be interesting, I wouldn't really cite this as evidence. This was not a research study, all it did was collect/summarize previous research and make recommendations for future research. There is no new information in that report.
Basically, they just collected every bit of writing on gun violence and said "here is what ppl have said in the past about gun violence." They then made recommendations, given that most of their findings included "research or data in this area is very incomplete."
not exactly what you are making it out to be.