Because if you have a criminal record, you're a pariah for life.

Even so, you and Narukami-san are seriously lucky. Who knows what a dirty cop would have done with you two.

[Can Yosuke tell Ren really hates cops?]

Neat. My best friend bleaches his hair too, though not piercings. He fights with things like a metal pipe or anything you can smack things with, and a shotgun.