Instruct: Classify a given review into positive or negative sentiment.
Query: Kirby's 'Erin Brockovich' Moment has come and gone

I met David Kirby at a non-autism related event a year before 'Evidence of Harm' was published. As the father of an autistic child I was astounded by his lack of basic knowledge of the spectrum. When pressed he finally acknowledged that this was his 'Erin Brockovich' moment: i.e. his story of heroic moms standing up against 'big pharma' would prove as irresistible to Hollywood as had Erin Brockovich's whistle-blowing story. Only problem was Kirby's claims re vaccines have been discredited time and time and time again by study after scientific study. This book will one day be viewed as representing as sorry a chapter in the history of autism as the darkest days of Bruno Bettelheim's reign of terror. This is also a disgraceful chapter in the history of American journalism.