Donning blue UN "peace keeper" hats and protest signs, an estimated 20,000 people gathered in Central Park yesterday to demand the end to the genocide in Darfur. A large percentage of those present were college students who traveled in bus loads to attend. Timed to coincide with this week's opening of the 61st General Assembly of the United Nations. the rally was a part of the Global Day for Darfur, a day of assemblies......