MS could have been wearing these shoes the whole time and no-one noticed. Or maybe the jail lost his shoes while stored, and he was given a pair just because they fitted him.
If he was trying to send a message to anyone, why from his feet :laugh:
Maybe writing Pacific on his shoes is about as meaningful as writing S8tan on underpasses? Maybe it's just something a bored kid does for attention.
Although honestly, why that word then?