Then the PC crowd came in and eliminated all of the offensive words from the Official Word List. So no ebonics with or without the hard-R.
There are still some words allowed which are offensive, but are included if they have at least one inoffensive definition, e.g. BITCH and FAGGOT.
JEW, used as a verb, used to be a word seen on a lot of Scrabble boards because of its high scoring possibilities. That word was removed from the Official Word List, even though many of the people petitioning the Scrabble Assoc. to keep it in are Jews.
IRONY is still a valid Scrabble word.
Unfortunately, NASPA did approve such words as ENUF. (Ostensibly because best-selling dictionaries did).