WHY THE LEFT MORPHS INTO FASCISM AND THE RIGHT...NOT SO MUCH
The do-gooder leftist in all the various ideological incarnations--the antiwar crowd, the environmental crowd, the communists, socialists, and assorted collectivists--offers the rationale that he does what he does for the "common good" and for "social justice", "peace" and "brotherhood". His high-minded, self-righteous rhetoric justifies (to him anyway) imposing his will and beliefs on others for their own good; and he will not hesitate to use whatever coercive capablity he has at hand to get others to do what he wants and what he says.
The capitalist, on the other hand, is overtly out to pursue his own selfish profit, and understands he must use persuasion. That is, he must convince people that his ideas and the products of his mind are better than all the rest so that they will be willing to part with their hard-earned money to possess them. His desire for power over others is manifested in an indirect manner because people must want what he has to offer and believe that they will benefit from an interaction with him.
She sums it up pretty well, doncha think?
The image is from what, if I were a fascist (or an indoctrination specialist in a school), would be required reading, Liberal Fascism by Jonah Goldberg. Fortunately, all I can do is try to persuade you to read it!