The bigotry comes from blaming immigrants for what's actually a home-grown problem. The ignorance is evident from the fact that your post shows you know nothing about the nature of the current problem with bedbug infestations, which are not the result of the squalor you attribute them to. In fact, the problem is mostly seen in hotels--often even the very fanciest hotels--but is just as common in upscale suburbs as it is in poor neighborhoods.