<Start yet another unpopular opinion>
The murderer and the murdered all come from the same socioeconomic background and they are all likely the same race. None of that excuses the murderer or the murdered for that matter. I don't want to empathize with murderers nor do I want to understand them. I want to put them behind bars so they can't murder law abiding citizens. Three hots and a cot is better than dead.
There are murderers in all walks of life, all races, all financial situations, single parent, 2 or more parents, all religions etc. Simply belonging to a group doesn't make you a murderer, that's mostly an individuals choice. Take a weapon to a place and use it, that's premeditation.
There are 2 reasons to look at the murderers background. First to make people look at the background instead of the murder itself. It's the old 'that poor guy had a bad upbringing, no wonder he committed murder' excuse. Yes, I said excuse. Most people from the same upbringing won't commit murder.
The second reason is to see if there is something in the murderers background that we can look into to prevent future murders. That, on the surface, sounds great. Figure out what turns one person in any specific group into a murderer, one into a high achiever and the rest into average people. Lets say for argument that we could do that, what next? Take high risk kids away from their parents? I don't think so. Incarcerate folks who may commit murder? Nope. Single them out for 'special' treatment? In this political climate?
I think that it's the Government's job to make sure that everyone has food, a safe place to live, health care (Including prescriptions), and a good education. A minimum guaranteed income would go a long way towards achieving that for more people. We need equality for all races, religions, sexes, sexual orientation, economic status or any other way you want to group people. We are no where near any of that.
<End yet another unpopular opinion>