They're either killing New York or saving it; Behold the masters of derailing projects in the city-- and the playbook they use to drive developers crazy

With City Hall now run by a mayor fixated on building towers with affordable housing, they are digging in their heels for a new series of battles. "Because they're noisy, communicate with one another and the press, vote in primaries and show up to poorly attended community-board meetings, they can bend the ears of local politicians and affect project outcomes," one developer said.