I assume that means humans with adequate tools. If I didn't at least have some wire cutters or a carpet I don't know how I would get through it without grievous injury. (I further assume we're not talking about the serious barbed wire from WWI.)
In this case, they did it with a moving blanket -- just folded it over and tossed it over the barbed wire at the top of the fence, then scaled the fence. It was still laying over the fence then next day.
