Answer:
Black Hawk uses the simile to show that the white man is corrupting the natives and that it will be necessary to exterminate them for this corruption to end.
Step-by-step explanation:
The text shows that the natives wanted to live in peace, separated from the whites who pursued them, hindered their paths and even corrupted them. In this way the author uses the simile to show how white men make the natives look like they are corrupt, liars, hypocrites and lazy people, making it impossible to get rid of them just by moving away and creating the need to defeat them so that the natives can live in peace.