Short for "racist sexist homophobic misogynist transphobic islamophobic xenophobe". Plural: "rasehomitrie".

Can be embellished with "bigot", "disgusting" and other practical phrases.

Used for more effective casting of slurs at persons one disagrees with.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.