Read the excerpt from midsummer by derek walcott. praise had bled my lines white of any more anger, and snow had inducted me into white fellowships, while calibans howled down the barred streets of an empire this excerpt makes an allusion to the shakespearean character caliban, who was forced into servitude and suffered harsh treatment. what is the effect of alluding to this character? it draws a comparison between the rioters and the character. it explains what the character does in shakespeare’s play. it draws a comparison between the author and the character. it provides an explanation of what occurred in the streets.