How we cite our quotes: (Part.Chapter.Paragraph)
Quote #4
The Shadowhunter boy was standing on the bar, feet planted wide apart. He really did look like an avenging angel getting ready to dispatch divine justice from on high, as the Shadowhunters were meant to do. (1.2.62)
"As the Shadowhunters were meant to do" implies that Jace is genetically predisposed to violence. Maybe there's no other way for him to behave, no matter how hard he tries.
Quote #5
[Brother Jeremiah's] previously sewn-shut mouth gaped open in a soundless scream, the gory threads of torn stitches dangling from his shredded lips. Blood, black in the torchlight, spattered his light robes. (1.5.12)
Yikes. This is another graphic, violent scene, which by this point is Valentine's M.O. When he's teamed up with his fear demon, something bad is bound to happen.
Quote #6
She couldn't not look at the blood matting Simon's brown hair, his torn throat, the gashes along his dangling wrists. (2.9.123)
Here's Simon's vampire transformation that we alluded to. You never expect a vampire transformation to be full of rainbows and sunshine, but this one is pretty bloody.