In the second sentence of the second paragraph, the author uses an em dash to set off a list that A
emphasizes the global nature of the injustices he describes
B
warns his audience against feeling complacent about past struggles
С
indicates the extent of his personal engagement with various civil rights struggles around the world
D
stimulates the audience's sympathy by referencing groups with whose struggles they are likely familiar
E
encourage his audience to join a political movement by enumerating issues likely to engage their interest