Dozens of Iran supporters at the World Cup defied FIFA’s ban by displaying the pre-revolutionary Iranian flag inside SoFi Stadium — giving the soccer org’s ruling a big middle finger.

Ahead of Iran’s World Cup opener against New Zealand on Monday, hundreds of demonstrators rallied outside the stadium to protest the Iranian regime. Inside SoFi Stadium, the pre-revolutionary Iranian flag was visible throughout the crowd, with fans displaying it on flags and T-shirts alike.

FIFA said the pre-revolutionary flag violated the org’s code of conduct, which states “banners, flags, fliers, apparel and other paraphernalia, that are of a political, offensive and/or discriminatory nature” will not be allowed at event venues in a decision back in May.

Security at SoFi Stadium was тιԍнт, with fans pᴀssing through metal detectors and bag checks. The Post observed security asking one group of fans to remove T-shirts featuring the pre-revolutionary Iranian flag. After the fans said they had no other clothing, security instructed them to turn the shirts inside out. But once inside the stadium, little appeared to be enforced, with the flags and T-shirts visible throughout the stands.

Large crowds waving Iranian flags and wearing red, white and green as they voiced opposition to the Islamic Republic all gathered outside the stadium before kickoff. Some chanted “USA” while others displayed pH๏τos of athletes who had been killed by the regime.