Original sentence: (There is some controversy surrounding Karenga.)  Although Kawaida promoted Karenga's own secular humanism, today Kwanzaa is commonly viewed not as an alternative to Christmas, but as a holiday without any anti-religious overtones.Kwanzaa was first developed by Maulana Ron Karenga in California as part of his philosophy of Kawaida.See his page for details
Edited sentence: Claimed to serve as an alternative to the growing commercialism of Christmas, it was founded in 1966 by Marxist, ex-felon Dr.Kwanzaa is not a religious holiday, but a cultural one, a syncretic festival, based on a Marixist interpretation of various elements that North American multi-cultural advocates claim form parts of the first harvest celebrations they assert are widely celebrated in Africa, around the 10th month of the year.Maulana Karenga (Ron Everett).No holiday known as "Kwanzaa" or comprising all the elements of Kwanzaa was ever celebrated anywhere prior to the 1970s