How to tell someone's parroting what they read about King's Birmingham Jail letter

Some people—call them race reductionists or identitarians as you please—misuse Martin Luther King's Letter from Birmingham Jail in three ways. None are supported by the text, but all are repeated countlessly in their community. 1 Some claim King was criticizing white moderates. That misses this part of the letter: ...Negroes in the middle class who, because of a degree of academic and