Here's the whole story in a nutshell.
WW2. Government imposes strict wage and price controls and pushes unions. Capital falls in line because they are makign money hand over fist.
Post WW2 the USA keeps a lot of FDR's New Deal policies in place and everyone is doing great. In 1960, minimum wage was $1.00/hour and the price of the average home was $11,000.00. Unions are strong and college is cheap.
- LBJ decides that the low level fighting in Vietnam has gone on too long. He decides to go for a massive push to knock out the Commies. Turns into a quagmire and he realizes he's screwed. He didn't want to raise taxes, so he prints money instead. By 1968 people are starting to notice.
1968, Nixon becomes President. Says he wants peace, but increases the War spending using LBJ's print money plan. Inflation is now a thing.
1970s Oil Embargo really devastates the economy. Prices skyrocket and inflation is getting worse.
- Reagan elected. Giant tax cuts for the wealthy and cuts for the poor. Homelessness is now a thing.
Before Reagan is elected, Middle Class is defined as one income supporting a family of four. $1 million is a vast fortune.
By the time Bush Sr. leaves office, 'middle class' is two incomes, and $1 million is what a rich guy pays for a party.