AT LEAST four people were killed by celebratory gunfire across Baghdad after Iraq clinched its first Asian Cup soccer championship. Mosques broadcast calls for the shooting to stop, while security forces enforced a vehicle ban in the capital in an effort to prevent a repeat of car bombings that killed dozens celebrating Iraq’s progress to the finals in Asia’s top soccer tournament. “Those heroes have shown the real Iraq,” said Sabah Shaiyal, a 43-year-old policeman in Baghdad’s main Shiite district of Sadr City. “They have done something useful for the people as opposed to the politicians and lawmakers who are stealing or killing each other. “The players have made us proud, not the greedy politicians. Once again our national team has shown that there is only one, united Iraq.”