To arrest people for "lack of common sense."
I'm not going to lie, going rafting down Main Street in Manayunk when it's totally flooded sounds like awesome fun! My sister lives within walking distance (thankfully on higher ground)of Main Street and said the bottom half of the street was totally flooded 3/4 of the way up the parking meters.
This is exactly the kind of behavior I'd expect from the Philadelphia police department.
On the other hand, if we start arresting people for lack of common sense then liberals......err I mean "progressives" are in trouble.
H/T to Alan