I think KungFoo is right: Every country has it's methods of arresting you without a trial. But in some countries it's easier than in others, since you have to bend laws a little bit. I think that's also true for Germany (my country). But I have read a quotation lately by a man, who wants to change the current status of this subject:
„Was die Chinesen können, sollten wir auch können. Da bin ich gern obrigkeitsstaatlich.“ - Dr. Hans-Peter Uhl (CSU)
This means (free translation): We should be able to act, the way China already can act. On this topic I would gladly do, whatever the government tells me to do.
He mentions this when talking of censorship of child pornography and computer games. (In fact I don't understand how he wants to compare GTA4, one of the games he wants to ban in Germany, to child pornography) But even so I think he goes too far!