I've seen A Clockwork Orange.
To me, it's one of the best films out there that reveals a true-to-life insight of the human condition, especially when it comes to finding means to fighting inner-city crime.
Psychological warfare, aversion therapy, etc. are, to the government workers, a means to an end, which is to instill nausea and distress at the very thought of crime or appalling actions. Apparently, they got what they wanted, at the cost of having the protagonist being stripped of any ability to choose good over evil.
Anyway, that's my viewpoint of the movie. Awesome novel, too. The adaptation was a success.