What was the meaning of the red scared during 1950s

A "Red Scare" is the promotion of a widespread fear of a potential rise of communism or anarchism by a society or state. ... The First Red Scare, which occurred immediately after World War I, revolved around a perceived threat from the American labor movement, anarchist revolution and political radicalism.

answer they showed that organic molecules such as amino acids could be produced from inoragnic molecules;