Dear Frosty Blue: Might you also consider the socioeconomic cultureof poor blacks who suffered abuse vs poor whites or even rich white psychopaths? How many end up in jail early on so they arent out acting as serial killers? How many have the means or knowledge to either hole up "in their own houses" or travel from city to city?
There could be so many correlating factors, it seems more feasible to focus on a process for addressing these conditions which work "regardless" of cause or racial bias, rather than try to isolate which factors contribute to which bias that shows in the numbers.
Why not just pick some cases to study and you can see the diverse factors in each:
Ted Bundy, Jeffrey Daumer, Coral Eugene Watts,
Some other cases of sick addictions or other psychiatric conditions
David Berkowitz, Andrea Yates or Jodi Arias, Ariel Castro,
You could look at only proven cases showing the MAOA gene.
Or look at similar cases, too, where either abusive conditions and/or some inherited dysfinction manifested in killing and/or torturing others, even if it wasnt an MAOA case of genetic lack of chemicals
Even if you isolate the specific causes in MAOA cases, if the same treatment process applies to them as to non MAOA cases, then why not focus on the cure or correction since that covers more cases?