That is one crucial difference between whites and blacks, certainly because of genetics. For a white person to be able to commit such an atrocity, you are virtually always dealing with an individual under a clinical diagnostic of psychopathy. However, regular blacks, often teenagers, are capable, in group, of such evil acts, and later analysis often conclude to an absence of psychopathic traits. I take it from my sister who is a legal psychiatrist and NO LIBERAL. A white psychopath will not show any remorse and keep his cool, while blacks will cry, deny, blame it on others, but were in fact able to commit an atrocity outside of any psychiatric condition. Anyway,, take it for what it's worth.