I agree that it began that way but I dont believe that is the root cause any longer.
The root cause of much the violence today is the basic loss of the belief that human life (beyond ones own) has value.
in the inner cities Christian values have eroded to the point that any personal slight may be a reason to kill.
How many times in the past year have you seen an article which describes a shooting resulting where the shooters motive was something as simple as not getting catsup with their takeout order?
It is the novel Lord of the Flies come to life in our inner cities today. The thin veneer of civilization that Christianity laid over the remnants of the Roman Empire is cracking and crumbling as Christianity is attacked and made a scape goat for opposing the LBGT mafia.
Everything that Christianity made real; rule of law, personal charity, the value of human life and respect for women is collapsing under the assault on the Christian faith.
I think the drug culture where chemicals to achieve the bio chemical process of euphoria replace the human values that respect life. This is what Robert H. Bork describes as that “rough beast of decadence now sends us slouching towards our new home, not Bethlehem but Gomorrah.”