Seriously? Do you actually believe that France, Germany, England and Japan have not tortured people, imprisoned people without charge, or (gasp) started senseless wars?
Good point, but what I meant is in the current era, after WWII. Since WWII the US has been the leader among western countries in torture and senseless wars.
I think you'd have to narrow it further than WWII. France was involved in colonial wars in Indochina and Algeria (the latter involved lots and lots of torture). England has participated in most of the US adventures and a few of their own (Suez, Northern Ireland, Falklands). Japan and Germany have kept their noses clean since WWII but that's partly a side effect of the complete asskicking they received in the war, rather than some innate cultural appreciation of peace and human rights. Up until recently France was conducting nuclear tests in the Pacific and their agents were apparently involved in the sinking of a protest ship in New Zealand.
England and Germany have much greater limitations on free speech than does the United States.