hate and crumpets
"God bless America indeed — it's a country where you can spread lies about
your own president and regard it as proof that you're more American than
he is."
http://urbanlegends.about.com/od/barackobama/ss/obamas_left_handed_flag_salute.htm
This is a paticularly insidious little piece of propaganda, but there are
many others like it documented here. There appears to be a cottage industry
out there systematically grinding out this stuff, no doubt served up with
crumpets at tea parties.
This requires a certain amount of sophistication as well as hate. It's hard
to believe it's just an amateur hack job.