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Not sure if this is the song you're thinking of:
"Detroit City" by Bobby Bare in 1963.....covered by Tom Jones in 1967
The first day of the Detroit Riot of 1967 was July 23, and it went on all the way to the 27.
The Song of Assisi - 1967 was released on:
USA: 1967
Jerome Olshove - Detroit
The Song of Avila - 1967 was released on:
USA: 22 July 1967