The question we have before us today is whether or not a blockchain community will turn into a corrupt government if there is even a slight possibility of people changing the code to get justice.

The short answer is yes. Mainly because there is no strict definition of justice.
By allowing hard-forks you recreate the existing political system. There are no reasons to assume that when you apply similar rules, you will get different results.

Even worse, the existing system has some provisions to protect an individual against the majority (e.g. whatever crime you commit you get a chance to defend your case in a court of law). Whereas the rule of majority will cause situations like murdering Osama bin Laden to be commonplace.