Laws vary from state to state covering things like the legal use of telephoto lenses, etc (and some of these laws, themselves, are in violation of federal prote

Laws vary from state to state covering things like the legal use of telephoto lenses, etc (and some of these laws, themselves, are in violation of federal protections and therefore void). As a general rule you are not violating the law if your camera is aimed at a public place especially if it is located on property you own. Filming and publishing license plate numbers can get you in trouble in some places and I'm sure there are other rules I'm unaware of related to what you are allowed to publish publicly, but what he's doing is likely very legal and protected by the First Amendment of the US constitution.