i saw this one tv and apparently this british guy came to toronto and did the same thing!
http://www.youtube.com/watch?v=l8CEzILvtg8
http://www.youtube.com/watch?v=l8CEzILvtg8
At the worst it's "Mischief".
Pretty funny...but what if fat dude had a heart attack?
In the US someone would have shot him and claim they were standing their ground.