FIFA is investigating alleged homophobic and racist chants from fans of four countries taking part in the World Cup, including Mexico and Brazil.
Football's governing body is specifically looking into homophobic chants made against Cameroon players in Mexico's opening Group A match. According to Soccerly, chanting the word “puto” (a derogatory term aimed at homosexuals) has become a Mexican tradition at soccer stadiums, even if the word is seldom used in typical conversation. Mexican fans have been known to aim their jeers at opposing keepers during goal kicks. The video depicts Brazilian fans imitating Mexico's "puto" chant, which was on display at the 2010 World Cup as well, although little was reported on it.
FIFA has already begun to consider disciplinary measures against Mexico, and it's concerned about the behavior spreading to fans of other countries. Along with Brazil, FIFA is investigating alleged racist and anti-Semitic banners being flown by fans of Russia and Croatia as well.
First-time offenders can be punished, according to the BBC, by playing a game behind closed doors. Serial offenders could be punished by “deducting points, relegation, or expulsion from a competition.”