How did king feel about white churches in the south?

The correct answer to this open question is the following.

On April 16, 1963, Martin Luther King wrote "Letter from Birmingham Jail." He wrote the letter to eight Alabama clergy while he was arrested in Birmingham. Previously, the clergy had asked King to postpone his civil rights demonstrations in Birmingham. Thay is when King wrote the letter as an answer to these influential clergy leaders.

In the letter, King responds to criticism of other religious leaders and expressed his feelings about white churches in the south, saying he was disappointed those clergies could not understand the reasons and necessities of the black community in America. King felt the white religious people failed to recognize and attend the injustices suffered by black people in the United States.