1. Mexico does not allow private ownership of guns. Switzerland all but requires it. An interested party might look into the history of the two places and draw conclusions.
2. Read part 2. I feel I should note: even if private ownership of weapons resulted in the type of citizen on citizen violence the cretins claim should happen, (which it doesn’t, as violent crimes go down in states that stop using the law to prevent individuals from defending themselves) it would not change the view of any logical right thinking person. There are some threats that warrant certain risks. The threat of a government is one.