Manhattan’s Fifth Avenue was awash in blue and white last Sunday as participants marched and watched the Celebrate Israel Parade. The event kicked off promptly at 11 a.m., but instead of elected officials, the procession was led by uniformed officers and veterans groups. “I was called by a stranger and told to meet someone on Lexington Avenue and East 53rd Street. If he drops a newspaper, I must follow him,” said Bayside resident Paul Kaye, 92. “The call ended with the line, ‘If you want to help your people.’”