I also had strong feeling for that sentence "Which, if one thought about it, didn't really help lowering the crime rate." But unlike Irresistableplx, I didn't get its full meaning in the first few seconds (^_^;). I puzzled with a silly "Why it didn't help lowering the crime rate ?_?", and about 5 seconds later. Ooooohh, THAT is what Draco means >v<.
Seriously, despite English is my secondary language, I still pride myself as a good interpreter of fanfiction. Well, 5+ years of reading slashy fanfiction is counted for something, right, right?

Sweet, lovely Faith, we all know how easy and fabulous you are, but if you want, we can pretend seeing you as 'difficult and hard'. I can't though (^w^).

Oh yes, Draco is "a danger to society." Clearly indeed (=^O^=). Silliness rules!