As Bill Maher said and I agreed at the time, go ahead and racial profile at airports etc. if it will increase your chances of stopping a terrorist from blowing up a plane. And this is because of the actions of a few extremists/lunatics.

And are most people "judging" all gun owners by the actions of a few lunatics? The point is you don't know who might go unhinged and guns are too easy to get one's hands on through illegal, semi-legal and legal channels. The Constitution does not keep the government from the power to regulate access to they scope and type of guns.

Needless to say, I find the above comparison overly simplistic at best.
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We are what we repeatedly do - Aristotle