system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] What makes Batman lose his cool when dealing with criminals?
gpt
Usually he’s already having a shitty time and they just push him over the edge. Two instances come to mind: 

In Knightfall, while dealing with the looming threat of the then-unseen Bane which was culminating in the mass Arkham breakout, Victor Zsasz broke into a woman’s college and was holding them hostage. Batman showed up, running low on self-control, and Zsasz ranted about them being the same except Batman went after criminals. Bruce’s response was to go feral and beat the piss out of Zsasz, screaming that they were nothing alike while beating him to death if not for Renee Montoya intervening. Another Knightfall example would be later when he cracked down on Joker and Scarecrow’s team up, only to hallucinate about Jason Todd when hit with fear toxin. This led to him delivering a mental soliloquial eulogy for the boy while whamming on Joker and screaming Jason’s name. 

Meanwhile, in the Hush arc, Bruce had reconnected with his childhood friend Tommy Elliot only for him to seemingly be murdered by Joker. This led to Batman almost actually killing Joker if not for the intervention of Commissioner Gordon. Jason Todd was not necessarily wrong to be pissed when he came back.