Americans have well-established rights to free speech. But at what point do such activities cross the line into defamation? That's a question currently confronting Michelle Gabrieloff-Parish, a mother of three who lives near the site of Rocky Flats
, a facility that once made triggers for nuclear weapons. A powerful law firm has sent her a cease-and-desist letter regarding her criticisms of developments near the plant, threatening millions in liabilities. But rather than zipping her lips, she's retained an attorney of her own and plans to keep speaking out at a weekend event.