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(THE CONVERSATION) Mass shootings seem to have become a sad new normal in the American life. They happen too often, and in very unexpected places. Concerts, movie theaters, places of worship, schools, bars and restaurants are no longer secure from gun violence.

Often, and especially when a person who is not a minority or Muslim perpetrates a mass shooting, mental health is raised as a real concern or, critics say, a diversion from the real issue easy access to firearms.

Less is dis...