You're missing the point. Bad guys (ie gang members, drug dealers, etc) will do what they want no matter what the law says. Take Chicago for example. Until very recently (last year) Illinois had NO carry program meaning it was impossible to legally carry a gun unless you were LE. We all know about all the crime problems Chicago has. The bad guys (gang members, drug dealers, etc) would carry anyway and not only that they would commit crimes too (armed robbery, murder, etc). So the fact that there's laws against carry and in Chicago's case even possession (ie you can have a gun but it must stay locked up at home) didn't stop all the violence there. Now, Illinois was told by the courts that they had to institute a carry program (along with DC). Now we've seen stories like
this stating that Chicago's crime rates are starting to drop. It could be a coincidence but I doubt it.
Now, carry permit holders are some of if not the most law abiding group/demographic nationwide.
Crimeresearch Stats (PDF warning)
JustFacts
Those are just a few sources from a quick search. As far as anecdotal evidence goes, I remember when Minnesota was debating the passage of the carry law there (I live in MN). There was no shortage of people saying that it was going to be the wild west, normal arguments would turn deadly, there would be bar fights with guns, and that road rage incidents would end in shootings. That has not happened. There's only been a few incidents and MN has more carry permit holders by percentage than Texas (3% TX vs 3.3% MN, my own calculations).
Minnesota Carry Permit Holder Crime Stats
I'm sorry, but carry permit holders are law abiding citizens. Add to all the supporting evidence the supreme court cases (Heller, McDonald, etc) where the court affirmed the 2nd amendment and it's pretty clear that carry is safe, effective, and legal.