The message below has been posted at our university forum. The author once accused me of spreading cold war propaganda (referring to my two books).
Ludwik Kowalski, author of "Diary of a Former Communist"
Former Communist: Thoughts, Feelings, Reality
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As the debates are surely to stem from today's travesty, the points in this piece are good to keep in mind: http://boingboing.net/2012/12/14/what-science-says-about-gun-co.html#more-200655
Summary in four words: it isn't that simple.