What is implied by the narrator's description of how Bakha seems somehow allied with the fire?

The narrator describes the fire as having an "angry consuming power" (13). Since Bakha is burning human waste and soiled straw, in a literal sense he is ridding the world of something objectionable and no longer of use. This implies that Bakha, too, is angry--and that he is the kind of person who can use his power to rid the world of things that are figuratively objectionable and outdated, such as the misery of outcastes.