Just read this article and had an interesting idea.

http://www.nytimes.com/2013/08/22/us/in-...ed=all&_r=0

What if all concealed carry permit holders were required to equip a personal recording device when they carried? Then there would always be objective evidence as to whether or not shooting someone was actually self defense. You could make it a crime to not have an operable recording device when carrying a concealed weapon. Just a thought.