(AP Photo/Eric Risberg) Eliza Galimba, 16, holds up a sign while watching the 44th annual San Francisco Gay Pride parade Sunday, June 29, 2014, in San Francisco. The lesbian, gay, bisexual, and transgender celebration and parade is one of the largest LGBT gatherings in the nation. This book review is from the Fall 2014 issue of The American Prospect magazine. There Goes the Gayborhood? By Amin Ghaziani 360 pp. Princeton University Press $35 F or nearly half a century, San Francisco’s Castro district has been the gay Mecca, and from every corner of the globe LGBT (lesbian, gay, bisexual, and transgender) tourists have made the pilgrimage. They came to party, and many wound up staying. The rainbow flag was first flown there. The annual Gay Pride parade and Halloween party were red-letter days on the LGBT calendar. Gay tourists still throng the Castro, and tour buses continue to bring gawking tourists, but the neighborhood isn’t what it used to be. Lesbians and gays are moving out, the...