Complex sentence: In the poem, Meeropol expressed his horror at lynchings, possibly after having seen Lawrence Beitler's photograph of the 1930 lynching of Thomas Shipp and Abram Smith in Marion, Indiana.
Split into simpler sentences: In the poem, Meeropol expressed his horror at lynchings. He had seen Lawrence Beitler's photograph of the 1930 lynching of Thomas Shipp and Abram Smith in Marion, Indiana.