Complex sentence: After 1945 the term "Fascist" conjured up images of Nazi death camps, but in the 1930s it had a very different connotation, meaning the centralization of political power as in Mussolini's Italy.
Split into simpler sentences: After 1945 the term "Fascist" conjured up horrible images of Nazi death camps. However in the 1930s it had a very different connotation, meaning the centralization of political power as in Mussolini's Italy.