It is an unhappy truth that racism is a way of life for the vast majority of white Americans. Spoken and unspoken, acknowledged and denied, subtle, sometimes not so subtle, the disease of racism permeates and poisons a whole body politic.

And I can see nothing more urgent than for America to work passionately and unrelentingly to get rid of the disease of racism. Something positive must be done. Everyone must share in the guilt as individuals and as institutions. The government must certainly share the guilt. Individuals must share the guilt. Even the church must share the guilt.

Martin Luther King, Jr. (1929-1968) American clergyman, civil rights leader, social activist, preacher

“Remaining Awake Through a Great Revolution,” sermon, National Cathedral, Washington, DC (31 Mar 1968)
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This was King's last sermon before his assassination.