I read that the Indonesians are trying to keep people from riding the roofs of trains. They've tried soft music; now they are erecting concrete balls that apparently will just boot the malefactors into the ditch.
Some see this is harsh. I'd say it is an improvement over the Nazis. As I recall, it came to their attention that prisoners were trying to escape the trains to the camps by hacking holes in the floor and dropping onto the track below. Ever inventive, the Nazis undertook to equip the trains with giant scythes, so as to cleave the body in to as they hurtled past.
Source: I can't pin this down at the moment but I believe I saw it in Richard Overy's Dictators.