Final answer:
Dr. Martin Luther King Jr. was upset about the white church's teachings because of the injustice and hypocrisy he saw. He wanted white ministers to support the civil rights movement and advocate for integration because it was morally right. Instead, he observed white churches remaining silent on racial and economic injustice.
Step-by-step explanation:
Dr. Martin Luther King Jr. was upset about what the white church was teaching its members because of the injustice and hypocrisy he saw. He wanted white ministers to support the civil rights movement and advocate for integration because it was morally right and because African Americans were their brothers. Instead, he observed white churches standing on the sidelines and merely offering empty religious words without actively fighting against racial and economic injustice.