A story about a super ignorant guy I once knew; the memory of which still annoys me

Every day in Baltimore, I used to walk past the intersection of two one-way streets (N. Charles and 28th, for the Baltimoreans out there). Now, normally (at least in Maryland) it's legal to take a left turn on red, if both streets are one-way (in the appropriate direction, obviously). However, this intersection was governed by an arrow traffic light.

Now…