PHILADELPHIA—A group of people dressed in black vandalized at least two federal buildings in downtown Philadelphia on New Year’s Eve, and police said they recovered Molotov cocktails and other suspicious devices as they arrested seven of them, authorities said Friday. Officers spotted about 50 people, all in black, around 8:30 p.m. Thursday at the historic…

PHILADELPHIA—Seven people are facing felony charges after at least two federal buildings in Philadelphia were vandalized on New Year’s Eve and the discovery of what police said were Molotov cocktails and other suspicious devices. Officers reported spotting about 50 people, all in black, around 8:30 p.m. Thursday at the historic U.S. Customs House, police said….