That's the moment I stopped respecting Light's vision of "purifying" the world from evil and began to despise him. I'm okay with killing criminals, since that was supposed to be his goal, right? But manipulating innocent girls, putting innocent bystanders at risk of being hurt, and planning to kill FBI agents who never did anything wrong (certainly not anything deserving of the death penalty) except for doing their jobs and tail him.
But, all that aside, I can't deny how great of a character he is. Seeing his robotic daily life of doing nothing but studying and having high expectations from everyone kind of makes me pity him. Not to mention how he is praised almost as a God for having the highest scores, by his family and his peers, which definetely got into his head waaaay before he got the death note.