What you need to know:
The tensions in the stands mirrored the challenges surrounding Team Melli's participation in the tournament.
California. Iran's opening match at the FIFA World Cup was as much about politics and identity as it was about football, with cheers, boos and competing loyalties providing the backdrop to Monday's dramatic 2-2 draw with New Zealand.
More than 70,000 spectators packed Los Angeles Stadium, located in the city that is home to the world's largest Iranian diaspora. Even before kick-off, the atmosphere reflected deep divisions among supporters.
Whistles and boos drowned out parts of Iran's national anthem, while others sang along proudly.
