I'm not an expert on NJ, but I would imagine that these protesters are a mix of out-of-state activists and residents from the urban areas in NJ, particularly up in the north. Those people growing up in Newark don't see a lot of nature, let alone a lot of hunters. Folks in the rural parts don't seem to give it quite as much thought.

P.S. Why ban liberal hobbies? Just ban the liberals! They're lucky people like us respect the Bill of Rights so much, or they'd be finished.