Final answer:
Coleman's accusers are not specified, but historical figures like Langston Hughes and Abram Colby faced accusations based on their racial backgrounds and political beliefs respectively, while Felix Frankfurter critiqued the bias in such trials.
Step-by-step explanation:
The individuals who accused Coleman of being racist are not explicitly named in the information given. However, we have historical accounts of African American poet and author Langston Hughes being summoned before the House Committee on Un-American Activities on suspicion of Communist influences in his works, inspired by his childhood experiences of racial inequality rather than by any political ideology. Also, Abram Colby, an African American who served in the Georgia State legislature during Reconstruction, testified about being attacked by the Ku Klux Klan because of his political views and refusal to be bribed into changing them. Furthermore, then-Harvard Law School professor Felix Frankfurter criticized the trial of immigrant defendants, highlighting the exploitation of their ethnicity and political views to sway sentiment against them.