jdun said:
The most violent country in Europe: Britain is also worse than South Africa and U.S.
Read more: http://www.dailymail.co.uk/news/article-1196941/The-violent-country-Europe-Britain-worse-South-Africa-U-S.html#ixzz1iuNVGEPg
http://www.tinyvital.com/blog/2003/7/26/american-vs-european-crime-rates/
http://www.google.com/search?q=european+crime+statistics&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US

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The US system, criminals either get killed by arm citizens or go to jail for a long time.
Sorry, you seem to present this as a good thing.
Sure, the crime rate is lower but let's just examine what you've said here, read in between the lines. What you're really saying is that in America, there is a lower crime rate because criminals get killed or locked up for life.
Now, excuse my morals, but I don't see that as the way a civilised and beneficial society should work. Most criminals don't commit crime because they are bad people, they commit crime because they're desperate, or angry, or are mentally ill, or because of societal factors (lack of parents, lack of a good education, homelessness are all much more common in criminals than the rest of society).
These aren't people who need to be punished/killed/locked away, these are people who need help. That's what the European system tries to do, help, rehablitation.