At a time when far too much attention on U.S.-Mexico relations is focused on our president’s border-wall fantasy, we should spare a moment or two to recognize the opposite of such close-minded thinking — which happens to be personified in Los Lobos. Consider that Just Another Band From East L.A., the 1993 Warner Bros. anthology released to mark the group’s 20th anniversary, now condenses less than half the band’s career. Even their improbable barnstorming of the U.S. pop charts with the La Bamba soundtrack is now more than three decades ago, and yet the musical brotherhood of Cesar Rosas, David Hidalgo, Louis Perez, Conrad Lozano and Steve Berlin sounds more relevant than ever. Their latest studio release, 2015’s Gates of Gold, is a fine example of how the same interlocking strains of roots-rock Los Lobos displayed on classic albums like Will the Wolf Survive? or By the Light of the Moon have only grown deeper and tighter with age and experience.