In western Libya, festive crowds gathered in public squares to watch anniversary fireworks, military parades and speeches. In the east, ruled by a rival authority bitterly opposed to the armed groups dominating the west, the mood was more sombre. Residents of Zawiya, near the capital Tripoli in the west, marched on the city centre where dozens of rebel fighters were executed in 2011 after being surrounded by Qadhafi's forces. Flags hung from buildings still bearing the scars of mortar and small arms fire. Those marks 'will stay, so we don't forget what happened here', said Mofida Al Romeih, who lost two brothers and a cousin in the massacre.