The Struggle Front for the National Independence of Guinea (Portuguese: Frente de Luta pela Independência Nacional da Guiné, FLING) was a political movement in Guinea-Bissau. Founded by groups opposed to the Marxist doctrine of Amílcar Cabral and the African Party for the Independence of Guinea and Cape Verde (PAIGC), FLING played a minor role in the national liberation struggle against Portuguese colonial rule.The national trade union federation União Geral dos Trabalhadores de Guiné Bissau was linked to FLING in the pre-independence period.