By Lucas own admission the Death Star sequence was lifted straight from the Dam Busters
& in fact, before the special effects were added all the dog fights etc were lifted from WWII films & included in the early rushes.
The Stormtroopers are openly based on WWII German troops & named after WWI German Stormtroopers.
All this has been done to death a million times over the last 40+ years.
Calling Star Wars racist is like calling Martin Luther King a Nazi, or the SPLC White nationalists.