Key issue is the word "many". You're attacking a group of people, grouped and based on color. I find that ignorant, harmful, and lazy. So, what do you define as many? 5%? 25%? 50? I'd like to know your definition of "many".
I have a very hard time believing a few million people truly wish America was solely white. Are there some? Of course. But even if it is say 5%, that's such a low number overall that it has an incredibly limited impact as a whole.
As for what people say, I'd like to believe everybody, but we see articles daily on people caught lying about attacks based on race, religion, etc...perhaps naive, but I'll continue to be skeptical. And cmon...I live in redneckville Montana. I know maybe one person who thinks this way. Maybe. I think people are trying to create issues where there aren't any, and we have more important things to deal with.