Murder of Elli Perkins
When her son, Jeremy, began to show signs of schizophrenia, Perkins attempted to treat him in accordance with Scientology instead of seeking proper psychiatric care. Jeremy's condition progressed to the point where he felt his mother was poisoning him with the vitamin supplements she forced him to take. After a suicide attempt, Jeremy murdered his mother.
The killing received substantial press coverage, with the implication being that Perkins' refusal to allow Jeremy to be treated by a psychiatrist caused his eventual outburst, and her death. Provided by Wikipedia