Two sides to every story they say .... The fact that pics were being taken of riders not in absolutely single file suggests that the occupants of the vehicle were not impressed to start with. I doubt the hoot was just one of warning. That said, and anything that transpired subsequently, doesn't justify in physical altercation. Can't people all just be lekker ... there's enough other things to worry about.! This sort of thing and silly season in general has seen me pack my bike away for the week. I'll resume on the weekend when hopefully the pandemonium of Xmas week would have settled down a bit.
