Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: An Extremely Biased, Tendentious Book

This book was written during the middle of the wars between two opposing schools of thought on the Scots-Irish: the Ancestor Worshippers, who thought the Scots-Irish were primarily of Scottish origin and could do no wrong, and the Irish Catholic Historians, who had the exact same viewpoint except they believed just as strongly in an Irish origin and denied the existence of any such group as the "Scotch-Irish." Maude Glasgow was about as belligerent in this debate as you could possible get, and was a fierce Ancestor Worshipper Historian. She is usually quoted today as an example of how vehement and biased authors of Scots-Irish books once were.