The son of one of America’s most famous convicted murderers might be about to destroy his own life with a lawsuit intended to save it. Last year saw a national fervor over the trial of disgraced former attorney Alex Murdaugh, who was convicted of murdering his wife and son in a sordid saga that involved drug use, embezzlement, an insurance fraud scheme, and an alibi that imploded spectacularly on the stand. Now, his surviving son Buster is advancing a defamation lawsuit as questions swirl over his involvement in the death of a former classmate. Want more breaking political news? Click for the …