Who is Gun Control Advocates/Environmentalists from A Listening Walk --and Other Stories and what is their importance?

Hill includes a few articles that defend hunting from people who take exception to gun ownership and feel it is cruel to kill animals with guns. Hill makes special note that huntsmen like himself pay for a large part of wildlife conservation efforts, and that hunters both understand and respect nature, unlike hypocrites who talk about preserving the environment, but who never do anything about it.