Why would business leaders and "liberals" be opposed to communist ideas?

Dominant version of liberalism in the United States.

It combines ideas of civil liberty and equality with support for social justice and a mixed economy.

According to Ian Adams, “all American parties are liberal and always have been.”

They reportedly espouse classical liberalism, that is a form of democratized Whig constitutionalism plus the free market.

The point of difference comes with the influence of social liberalism.

It has been prominent in resistance movements against communism under socialist states governed by Marxist–Leninist communist parties throughout history.

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