Agreed. I hate it when people do that. For what it is worth, it is a fact that he was walking through this community, irrespective of gate, guardhouse or any other barrier. It is also true that no one is claiming that he jumped over a fence or somehow snuck in. Therefore, in my opinion, I do not see any elements of criminal trespass that could have occurred. It is a total fact to say he was not trespassing as that is crime and requires a charge, a complaintant and usually a warning. None of this had been filed or issued. Ergo, there is no criminal trespass. If you disagree, please link anything that shows where Martin was charged with criminal trespass here, or had been issued a criminal trespass warning.
I will add one caveat that my knowledge of such things is based on my state and this might vary from state to state.