They are within their right, but........

If it were only one stand against your land, I'd say get over it. But the fact that they surrounded you like that tells me they are just d^&*s. I think If my land wasthe bedding area or an area the needed to pass though, I would put up a high fence in each spot that they have a blind. That way the deer will go through a different spot. At least they will get the point. Not that they'll necessarily care though.