Benin police on Saturday fired tear gas to break up a protest organised by labour unions in the economic capital Cotonou over high living costs and governance.Small groups of protesters had gathered at the site, which was cordoned off by squads of police who fired tear gas to disperse demonstrators, an AFP correspondent at the scene said.”I came here to march against the high cost of living,” trader Ariane Assilamehou told AFP at the protest. “But you see police rushing towards us and firing tear gas.”Protesters chanted the national anthem during the clashes.CSA Benin, one of the country’s…