Which excerpt from Kurt Vonnegut's "Report on the Barnhouse Effect" is an example of irony?

Read the sentence from susan b. anthony's "on women's right to vote." hence, every discrimination against women in the constitutions and laws of the several states is today null and void, precisely as is every one against negroes. in this sentence, the author's tone is best described as

Ineed . i need to write a story with this words. vapid, reverie, chastity, petty, invariably, posterity, axiom, pugnacious, bourgeoisie, knell

I'm writing a persuasive speech about texting and can anyone me out?