KIEV (Reuters) - About 100 Ukrainian gay rights activists held the country's first gay rally on Saturday, helped by police who arrested 13 people for trying to break up the march. The activists walked for about 250 meters (yards) along Victory Avenue in the capital Kiev while Orthodox Christian activists nearby chanted slogans denouncing them. "Ukraine is not America. Kiev is not Sodom,' shouted one anti-gay demonstrator over a loudspeaker. ...