IIRC, Zizek talks about the justification, "I'm doing it for your own good." This suggests a grim dispenser of justice, in the name of the Other, not someone who appears to be doing it for their own and others amusement.
The enjoyment, says Zizek, is the enjoyment of the Other, for whom the person is supposedly acting, "I do this for you own good. It's hurts me more than it hurts you."
He also criticized the enjoyment derived from compassion in his post 911 essay. In that essay, Zizek argues that the position taken by those who hesitate to identify with the 911 victims because they fear supporting u.s. imperialism is a form of enjoyment. Those who say, "but we deserved it because of what we've done in the middle east," are enjoying the suffering of others. Similarly, those who identify with the dominant u.s. narrative of nationalism where 911 was a special 'American Tragedy' suffered by no others are enjoying the suffering of others.
Zizek wants us to express grief outside of these two poles, where we recognize that the appropriate stance is solidarity with all victims, unconditionally.
What an evil way of thinking. it's obviously a way of thinking that support torture for fun.
Kelley