Self-defence is always legitimate, Premier Giorgia Meloni said Wednesday in commenting on a case in Rovigo Tuesday in which a home owner was cleared after shooting and wounding a would-be burglar in the Veneto city under a new legitimate sellf-defence law passed by her government.     In previous such cases, home and shop owners have often been placed under investigation on suspicion of excessive self-defence.     ALL RIGHTS RESERVED © Copyright ANSA