“The Revolving Cycles Truly and Steadily Roll’d” makes its imprint in explicitly displaying the tragedy of its titular “revolving cycles” of racism and indifference, and by viscerally depriving the audience of any disconnection between the world of the stage and the world of our lives.  With terrific performances throughout, and trenchant treatment of a devastating story and situation, metatheatrical devices cloud its impact, which can be too clinical, but is nevertheless striking.