Just as President Obama was telling the American public not to be scared of terrorism, New Yorkers were learning about a foiled attack on their city.Four men appeared in court charged with conspiring to blow up two synagogues in the Bronx and shoot down military planes. The city’s mayor, Michael Bloomberg, gave his reaction: “Sadly I think we were just reminded that peace is fragile, democracy is fragile and we have to be vigilant all the time. The good news here is that the NYPD and the FBI did exactly what they’re trained to do and have prevented what could have been a terrible event in our city,” Bloomberg said. The men, three Americans and a Haitian, were arrested as they planted what they thought were explosives outside the synagogues. They were in fact planting harmless material sold to them by FBI agents who had been tracking them. Police say they were not linked to any international group, but were acting alone to commit jihad.