Attempted murder.
Here in NJ the overpasses throughout the ‘hood have special fencing to prevent this; they curve towards the sidewalks above and have much smaller spaces between links to prevent ferals from dropping anything significant onto People That Matter...
some assholes killed a woman here in GA doing that in 1990. Eric prince and Eric Waugh - both still serving life sentences as far as I know.
Just practicing for the Republican Convention
Many overpasses around NYC have curved fencing that extends above the head of people and has smaller openings in the wire than standard fencing. I have to believe it saves many lives, as there are soooo many knuckle walking brain dead pieces of ambulatory sludge around here with way too much time on their hands and way too little between their ears.
Then we'll see how f-----g funny they are...
I read a sci-fi story decades ago about how commuter trains had evolved to counter attacks by urban ferals. Random passengers were assigned to machine guns on the cars, ala tail and belly gunners in bombers.
That seemed pretty over the top when I read it then.