And that hatred stems from the fear that the progressive left perpetuates.
Not quite. The Alt-Right came into existence because some groups like the KKK want to cling to old values before the fall of the Confederacy; some feeling ignored by the left-wingers like Richard B. Spencer; and some struggling to understand why they are in such poor economical conditions, such as some of the atendees of the 2017 Unite the Right rally who had to ask for funds for their trip to Charlottesville and can be inferred from their belief foreigners are stealing jobs from Americans, so the reasons of the Alt-Right existing are various and, considering the one who stole the term Alternative Right from paleoconservative Paul Gottfried’s The Decline and Rise of the Alternative Right–which was about pitting the paleoconservatives, called the Alternative Right, against the neoconservatives, called the New Right–and redefined it to mean white identitarianism was Richard B. Spencer, the second reason I listed would be the preferable, unifying nexus of the Alt-Right along with Steve Bannon’s American exceptionalism.
