I agree that 'foetus' is etymologically incorrect, and an attempt to impose Greek spelling on a Latin word, like when people try to be clever and use 'octopi' as the plural of 'octopus'.
However, the American spelling of 'paedophile' is wrong, so we've got you there.
To make my own addition to the list, how about pledging allegiance in school every morning? For a country that puts such value on individual freedom, that's some creepy, totalitarian, 1984 shit.
I always sat down during that shit. Though I did go to school in left wing-hippie-marxist-pinko-commie California.