Sorry, gotta disagree with him there. All recent evidence (ie. the last few decades) points to Islam as virtually nothing but violence.
American Historian, William Federer, has done extensive research on Islam.
DVD Islamic Conquest-Past & Present -A captivating series of five 30-minute programs
http://www.americanminute.com/store/product.php?productid=5&cat=3&page=1
eBook - What Every American Needs to Know About The Qur’an (pdf file)
http://www.americanminute.com/store/product.php?productid=3&cat=2&page=2
Try the past 1,400 years.