Complex sentence: The accusation of being a Communist agent was levelled by U.S. Senator Joseph McCarthy against many American orientalists at the time, such as Knight Biggerstaff and E. Herbert Norman, and Lattimore in particular was accused by him of being'a top Russian spy'.
Split into simpler sentences: The accusation of being a Communist agent was levelled at the time against many American orientalists at the time, such as Knight Biggerstaff and E. Herbert Norman. Lattimore too was accused by U.S. Senator Joseph McCarthy of being'a top Russian spy'.