The answer to this question can be found in Chapter 2.
I guess you could start with the people who felt like they could make money of the Japanese who were having to move. An example of this is the guy who wanted to buy the china for only $15. So some of the public's attitude was just to get what they could from the Japanese.
But mostly what Jeanne says is that white Californians started to become suspicious. You can see this where she is talking about her teacher. She says that the tolerance that Americans used to fear changed to "distrust and irrational fear."
So I suppose the best answer is to say that she says that the public felt "distrust and irrational fear" towards the Japanese Americans.