Pc Mark Dyson, of South Yorkshire Police, said: "It was incredibly frustrating to see this happening when we were just trying to help the guy.
"It might have been a bit easier to understand if it was teenagers messing about but these were adults shouting things like 'jump' and 'get on with it'.
"When you've also got people shouting things like this out of vans driving past it's terrible really.
"What would these people have thought if it was one of their relatives up there?"
Pretty much the same, I'd expect.