A small migrant caravan has set out from southern Mexico, heading north, but is unlikely to reach the U.S. border after authorities broke up two other small caravans headed to the United States over the weekend. About 1,500 migrants — mostly from Venezuela, Cuba, Haiti, Colombia, Guatemala and Honduras — set out walking on Sunday from Tapachula, a city near Mexico’s southern border with Guatemala. (AP video shot by Edgar Hernández Clemente)