I AM shocked and dismayed by the levels that the Sunday Morning Post has reduced itself in printing the article ''Your son has just admitted snorting heroin'' (July 11). In publishing the name of a juvenile in association with a crime for which he has not even been convicted of in a court of law, your newspaper has stooped to nothing more than destructive tabloid journalism. Low self-esteem may often be a contributing factor in drug addiction. The results of this article will do nothing but alienate this young man and further undermine his self-esteem. NAME AND ADDRESS SUPPLIED