Umm, those examples are protected classes under the US consitiution. Let's stop with the sanctity of private property stuff, OK?
Let's face it, gated communities are desigend to keep "those" people out and to homogenize the residents to the absolute lowest common denominator.
If they ban motorcycles, they have also banned motorcyclists, who happen to be some of my best friends. No, thanks. No thanks to suburbia as well. Culturallly devoid of any redeeming value AFAIK. My $.04 ( hey, inflation)