The technological advances addressed in the novel, "1984," that present ethical implications today is the propaganda being emitted from the radios in the streets which can be the same to media outlets in the Western World today that seems to be one-sided on certain arguments. A lot of people’s opinions are based on what is presented on television media, therefore their opinions become one-sided.
You can use the synonym clue in understanding the meaning of the underlined word. The other word synonymous to it might be more familiar to you so it would be a lot easier. The synonym clue says the word in a simple way.
I would say that he had ambivalent feelings that one the one hand his killing an elephant would seem like an affront to the culture of the Burmese and as further evidence of British imperialism in disrespect for the natual heritage of their country while on the other hand if he didn't kill it he would be considered not responsible to the townspeople who were threatened by it.