I’m tired of the word community. I think it’s overused to such an extent that it has been robbed of any meaning. Neighborhood is more like it. And this neighborhood, not far from the highly secured Castro complex, is a fine example of the meaning of the word. The residents have followed artist José Fuster’s lead and plastered their homes, walls, street corners with mosaics of every stripe. Consequently, first-time visitors tend to lose their grip on reality and enter a very surreal, well, neighborhood.