New York City is the largest and most densely populated city in the United States. We are crowded together with people from all over the world who live and visit here. So it does seem like an environment where contagion could spread easily.
But with that said... Having seen the extent of the left’s deviousness in things like the Russia Russia Russia collusion hoax - a planned event cannot be excluded as a possibility IMHO.
SF population 800k. Nyc 8.5 mil !!!!