Police say improvised explosive device was thrown at NYC mayor’s home

Police arrested several people after a smoke-generating “suspicious devices” was thrown during dueling protests at Gracie Mansion Saturday.

​Police arrested several people after a smoke-generating “suspicious devices” was thrown during dueling protests at Gracie Mansion Saturday.  US Police arrested several people after a smoke-generating “suspicious devices” was thrown during dueling protests at Gracie Mansion Saturday.