Fernando Bustos Gorozpe was sitting with friends in a cafe here when he realized that — once again — they were outnumbered. “We’re the only brown people,” said Bustos, a 38-year-old university professor. “We’re the only people speaking Spanish except the waiters.” Mexico has long been the top foreign travel destination for Americans, its bountiful beaches and picturesque pueblos luring tens of millions of U.S. visitors annually. But in recent years, a growing number of tourists and remote workers — hailing from Brooklyn, N.Y., Silicon Valley and points in between — have flooded the nation’s capital and left a scent of new-wave imperialism. Link in bio for the full story. 📸 Celia Talbot Tobin / For The Times