Yes, there was a wealthy middle class of Cubans who fled after Castro took over - they followed their employers to the U.S.

And who could blame them. My wife's own mother and her sisters were orphaned as babies because their parents were murdered by the Bolsheviks for the crime of being the owners of a gristmill. Those who fled Cuba learned well the lessons of history when it came to Communists seizing power by revolution.

Here's what a UNESCO report from 1957 said: "One feature of the Cuban social structure is a large middle class. Cuban workers are more unionized (proportional to the population) than U.S. workers....the average wage for an 8-hour day in Cuba 1957 is higher than for workers in Belgium, Denmark, France and Germany. Cuban labor receives 66.6 per cent of gross national income. In the U.S. the figure is 68 per cent. 44 per cent of Cubans were covered by Social legislation, that's a higher percentage than in the U.S. at the time."