Two persons were killed and seven others injured in an ugly brawl during a wedding in Uttar Pradesh's Bulandshahr district -- over who would dance with women dancers, police said on Tuesday.The incident took place at Titaura village on Monday night when a bitter row led to shooting, leaving one man dead. An uncle of the groom who tried to intervene was beaten to death.Two of the injured were in critical condition, a police officer said.