A so-called "responsible gun owner" gunned down a man in cold blood — 4 shots, point blank — because the man got grass on him. This is why guns and gun owners need to be strictly controlled; because anyone can have a bad day (Then again, some people are just complete sociopaths). Having easy access to something that is designed only to harm and kill is just not something that the common person should have.

People buying guns should be required to have initial and regular psychological assessments, as well as screening for any violent criminal activity; whether committed as an adult, or as a juvenile. It's not worth taking a chance on people's lives just to allow cowards like Harrington to have guns to hide behind.