[anoncake]

Some people consider violating laws immoral per se. If you make actions leading to a dictatorship illegal, you reduce the potential dictator's supporter base.

Also, in a functioning state, the bureaucracy (mostly) follows the law and the judicary's interpretation of the law. Then again, functioning states don't tend to turn into dictatorships.

(Fun fact: Article 20 (4) of the German constitution explicitly authorizes every German to resist when someone abolishes freedom and democracy. Considering the mentality of the average German, this is probably necessary.)