Kinda seems hard to imagine the regime of laws that would have stopped this guy.
English/American law depends on a presumption of innocence, and stiff, irrelevant, punishment, such as fines or imprisonment, which do not help the individual with his challenges in life.
A regime of laws, that would affect the culture of violence, would be where individuals would receive incentives for acquiring skills related to their inability to handler anger, and other relevant emotional education.
Even if the friends had reported Dylann Roof to authorities, No crime had been committed, and they did not know of a specific threatened plot with a date, time and place, so police would not have had a power of arrest.
The ACLU felt that too many people were being institutionalized, when the States provided mental health hospitals, and formed an alliance with Reagan and the Pharmaceutical companies, to make civil commitments much harder to accomplish.
There are a number of anger management and self-control courses, or regimens of therapy, that have been developed and are not exorbitant in price.
The vision of reducing violence in America, could be for the Laws that would fund and incentivize anger management courses/counseling, for a citizen-friend-relative complaint that currently does not meet legal criteria of Guilt of a crime.
Self-control improvement, children & crime : The Campbell Collaboration
https://www.google.com/?gws_rd=ssl#q=Self-control+programs
https://www.google.com/?gws_rd=ssl#q=anger+management+programs
Alternatives to imprisonment are often regarded as coddling criminals. From the standpoint of recidivism, imprisonment is stupid.
Reducing the occurrence of crimes of violence can be done without changing gun laws.
The NRA has been against alternatives to prison, and have advocated more imprisonment as a solution to violent crime.
Much violence is related to drug use, and withdrawal. There are many drug programs to help those whom drugs are a problem.
The programs have been developed and researched as effective, but the utilization and incentivizing of self-help programs is not optimized in the world, or the US.
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