He formed this idea in his head that you had been responsible for the death of someone near and dear to him.
10 seconds sound clip from the A Clockwork Orange movie soundboard.
You can hear this line at 02:10:11 in the Blu-ray version of the movie.
Quote context
[...]
- There is also a certain man, a writer of subversive literature, who has been howling for your blood.
- He's been mad with desire to stick a knife into you.
- But you're safe from him now. We put him away.
- He found out that you had done wrong to him. At least he believed you had done wrong.
- He was a menace. We put him away for his own protection. And also for yours.
- We put him away where he can do you no harm.
- You see, we are looking after your interests. We are interested in you.
[...]