This could be an instance:
In terms of freedom of expression, soccer stadiums are nearly as important as the Internet in Iran now. The protest is more secure there because the police can't arrest thousands of people at once. State television broadcasts many matches live, and the people use it as a stage for resistance. They're showing banners to the cameras and chanting protest songs, which is why some games are broadcast without sound now.
And then there's this:
[R]ecently, in March 2011, two female soccer fans were eager to enter the stadium for the Tehran derby, where Esteghlal played against Persepolis. They disguised themselves as men, but they were arrested.
Sometimes you just know when a regime is doomed - sooner or later but definitely.