Union Information and Broadcasting Minister Venkaiah Naidu has insisted that the life histories of great national leaders like Mahatma Gandhi should be remembered by the people of the country to honour them and to nourish patriotic ideals. <br/><br/>He inaugurated a four-day exhibition at Rajaji Hall in Chennai on Saturday afternoon, put up by the Directorate of Advertizing and Visual Publicity. Later, addressing the public, he said, after the Satyagraha Movement, India should go for Swachagraha and ensure sanitation and cleanliness throughout the nation.