A political philosophy, movement, or regime (such as that of the Fascisti) that exalts nation and often race above the individual and that stands for a centralized autocratic government headed by a dictatorial leader, severe economic and social regimentation, and forcible suppression of opposition
The emphasis on race and economic / social regimentation are the major break from the left.
Fascism as defined by Merriam-Webster says
The emphasis on race and economic / social regimentation are the major break from the left.