re the youtube clip above, apparently it has only recently appeared, there are comments by folks apparently knowledgable about extant material on the incident about its authenticity, though the comment that it does appear to be technicolor (which would have existed atthis time) appears. As far as motive for surfacing now if real, death of original owner (or cameraman/other who saved film from other fate) or subsequent owner certainly is high on list.
This incident had thousands of witnesses over multiple nights. The only question on the footage is its own authenticity, not the event itself having occurred.
WOOOOPS
THIS POST REF’D # 36 HAS THE LINK . . . I may as well put it here . . .
http://www.youtube.com/watch?v=D326UXwubKA&feature=related