[Apocalipstic]

To jump off of what AJ said, often education is the marker, rather than how much money someones makes/has.

How many times have I heard, Ohhh, so and so works in a car or other type of factory, but for 100 years those have been stable middle class jobs that paid for education, families, very nice homes, amenities, boats, travel etc. But a factory worker or truck driver might be seen as lower class than someone who makes a 10th of what they make (or rather did until recently) who works at a museum or a high school or even in retail. It is somehow seen as more higher class since no one actually gets dirty.

In some other countries, the UK and Argentina that I know of, the Middle Class is actually wealthy people who work. Powerful Doctors, Lawyers, Government Officials, Captains of Industry are Middle Class, as is anyone who has a job no matter how much money they have. To be rich, one does not work at all.

In this scenario, most of what we call Middle Class in the US falls into "Upper Poor" maybe?

Thoughts on what actually is Middle Class?