Loss of factory jobs led to less in the middle class or you needed to work a white collar job to be middle class.
Industrial jobs moved overseas leaving those working in factories without jobs. Middle class jobs no longer included factory work but rather service jobs many requiring college degrees.
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Mafia organizations are more of a threat than terrorist groups because they modify democracies from within by introducing their illicit earnings into the legal economy. Their businesses defeat the competition because, by counting on these illegal parallel markets, they can lower their prices. Mafia assets also finance the banking, construction, and transportation sectors of the economy.
The expression 7x-36 is equivalent to this question.