What is the purpose of the sentence "These are the hard, brutal, and unbelievable facts" in the following paragraph?
In any nonviolent campaign there are four basic steps: (1) Collection of the facts to determine whether injustices are alive; (2) Negotiation; (3) Self-purification; and (4) Direct action. We have gone through all of these steps in Birmingham. There can be no gainsaying of the fact that racial injustice engulfs this community. Birmingham is probably the most thoroughly segregated city in the United States. Its ugly record of police brutality is known in every section of this co

Question

What is the purpose of the sentence "These are the hard, brutal, and unbelievable facts" in the following paragraph?
In any nonviolent campaign there are four basic steps: (1) Collection of the facts to determine whether injustices are alive; (2) Negotiation; (3) Self-purification; and (4) Direct action. We have gone through all of these steps in Birmingham. There can be no gainsaying of the fact that racial injustice engulfs this community. Birmingham is probably the most thoroughly segregated city in the United States. Its ugly record of police brutality is known in every section of this co