 Many of the residents ' original grievances were addressed with the passing of the Local Government ( Northern Ireland ) Act , 1972 , which redrew the electoral boundaries and introduced universal adult suffrage based on the single transferable vote . Elections were held in May 1973 . Nationalists gained a majority on the council for the first time since 1923 . Since then the area has been extensively redeveloped , with modern housing replacing the old houses and flats . The Free Derry era is commemorated by the Free Derry wall , the murals of the Bogside Artists and the Museum of Free Derry . 
 Many of the residents <a href='null_genetive' title='1'><mark>'</mark></a>original grievances <a href='uninflect' title='2'><mark>were</mark></a> addressed with the passing of the Local Government ( Northern Ireland ) Act , 1972 , which redrew the electoral boundaries and introduced universal adult suffrage based on the single transferable vote . Elections <a href='uninflect' title='3'><mark>were</mark></a> held in May 1973 . Nationalists gained a majority on the council for the first time since 1923 . Since then the area <a href='been_done' title='4'><mark>has</mark></a> been extensively redeveloped , with modern housing replacing the old houses and flats . The Free Derry era is commemorated by the Free Derry wall , the murals of the Bogside Artists and the Museum of Free Derry . 
Many of the residents  original grievances was addressed with the passin of the Local Government ( Northern Ireland ) Act , 1972 , which redrew the electoral boundaries and introduced universal adult suffrage based on da single transferable vote . Elections was held in May 1973 . Nationalists gained a majority on the council for the first time since 1923 . Since then the area done been extensively redeveloped , with modern housing replacing tdaold houses and flats . Thdaree Derry era is commemorated by thedaee Derry wall , the murals of the Bogside Artists and the Museum of Free Derry .