Complex sentence: One of those groups named "La barra de la Goma" ("The " barra"of the rubber"), was created in 1927 and supported the San Lorenzo de Almagro football (soccer) club.
Split into simpler sentences: One of those groups named "La barra de la Goma" ("The " barra"of the rubber"), was created in 1927. They supported the San Lorenzo de Almagro football (soccer) club.