I don’t think whites “fantasize” about that. What I do think is that we have become increasingly disconnected from people who are different than us (whoever “us” may be). Wealthier people do not regularly interact with poorer people. Highly educated people do not regularly interact with poorly-educated people. Urbanites rarely interact with people in rural America. Races rarely interact with other races — at a deep, personal level (and this has little to do with racism). This has been happening through geographic separation for a fairly long time — and that separation has been exacerbated by the Internet where people can — and I think naturally do — gravitate towards interacting with people who think, believe, and act very much like themselves.
I don’t think whites “fantasize” about that. What I do think is that we have become increasingly disconnected from people who are different than us (whoever “us” may be). Wealthier people do not regularly interact with poorer people. Highly educated people do not regularly interact with poorly-educated people. Urbanites rarely interact with people in rural America. Races rarely interact with other races — at a deep, personal level (and this has little to do with racism). This has been happening through geographic separation for a fairly long time — and that separation has been exacerbated by the Internet where people can — and I think naturally do — gravitate towards interacting with people who think, believe, and act very much like themselves.