Well, here in the States, while your right to free speech is somewhat protected by our Constitution; marching down Castro Street in San Fransisco chanting, "Death to Fags!" (protected free speech) isn't very wise. You are liable to get your hair parted with a metal pipe.
If such conduct (the demeaning chants) occurred at one of our stadiums, the loudmouths perps typically end up covered with beer and in angry verbal exchanges with people who came to enjoy the game, not to listen to some drunken assholes smart off about someones sexuality. They are soon escorted out. The ticket to the game allows you to enjoy the game; it doesn't give you licence to say/do whatever you want.
My $.02