Yeah, I have seen those. It was multiple times, I remember one where one argentinian gusano said some slurs and that speed needs to "return to his country". I think Speed was with Ronaldo Nazáro (the famous Brazilian player) when they shouted that to him. It's really messed up how Fifa does nothing when this happens and it's always left to local police to prosecute people for racism (which does happen in LatAm but idk how it works in the US).