a movement, developed in the U.S.S.R. in 1935, aimed at encouraging hard work and maximum output, following the example of Alexei Stakhanov—by extension: exceptionally productive work, excessively intensive work
‘Reds under the bed’ and variants denoted an exaggerated or obsessive fear of the presence and harmful influence of communist sympathisers in a particular society, institution, etc. The earliest instance that I have found is from the Chicago Tribune of 28th September 1924.