Calimbo's badge is meant as a contrast to Montressor's family crest/coat of arms. If M's motto (no one attacks me with impunity) drives his actions, then C's motto drives his actions (no one escapes the law).
I originally thought to make it "no one escapes me" but decided at the end that C should be an officer of the law first, not a actor on his own. (And maybe the motto should be in English, but that takes the fun out of it for me....)
And who doesn't love the EAPD (Edgar Allen Police Department)!