Sure you were in the intersection and you shouldn't have been there. You definitely got picked on because you were on a bicycle. If you were in a car nothing would have transpired. It seems the crossing guard was a total ass, next time get off your bike and tell him to get out there in the intersection right now and walk you and your bike across! Maybe go and torment him by pressing the walk button and making him walk you across like 15 times!

Be sure to ask him why he isn't a real cop and why he is so rude.