Complex sentence: During the 1950s, under Senator Joseph McCarthy, there was a "witchhunt" for leftist economists, and Thorner would not divulge the names of his leftist friends thus lost his job and a government-funded fellowship for a project in India.
Split into simpler sentences: During the 1950s, under Senator Joseph McCarthy, there was a "witchhunt" for leftist economists, and Thorner would not divulge the names of his leftist friends. Thus he lost his job and a government-funded fellowship for a project in India.