You can let your imagination flow and don't forget to add support to your answer.
1) He is opposed to tbe idea of hunting humans
___________________________
In the passage is says ""But you can't mean_" Gasped Rainsford." He's surprised that General Zaroff actually intents to hunt humans.
Good luck,

Explanation:
Baldwin talks of a "disease" which afflicts black Americans and can wreck race relations and creating a "rage in the blood" so he is using the "disease" as a metaphor for probably the rage that black Americans have for experiencing the inequalities of life in the US especially in the 1960's when the civil rights movement was so strong and segregation was so strongly practiced in the South still.