Grindelwald's initial victory at Bhutan in Fantastic Beasts: The Secrets of Dumbledore reveals how many supporters the Dark Wizard has in the Wizarding World, seeing as many celebrated his ascension and declaration of war on the Muggles by raising his insignia. However, these followers are merely a faceless mass, and the sun sigil of Vicência Santos is cast into the air just as quickly when the Qilin Newt Scamander produces bows to her instead. Whereas Grindelwald is shown to have far-reaching support from Germany to Great Britain, and even the US where Katherine Waterston's Tina Goldstein has a brief scene as the new Head of the Auror Office at MACUSA, his reach and power lack the same edge that Voldemort's possessed due to the fear and recognition of the Death Eaters.
Harry Potter's Lord Voldemort takes on an anti-Muggle stance even more extreme than Grindelwald's, putting Purebloods on a level above other witches and wizards despite being a half-blood himself. Throughout the entirety of the Harry Potter series, Voldemort's inner circle of Dark Wizards, his Death Eaters, were prominent antagonists for Harry and his fellow Hogwarts students. They were responsible for the deaths of many of Harry's friends and family and a few even infiltrated Hogwarts before the Dark Lord's defeat.
Related: Where Does Grindelwald Go At The End Of Fantastic Beasts 3?
Grindelwald's historical failure makes Voldemort's Harry Potter defeat even worse. Grindelwald's bid for Head of the International Confederation of Wizards at the end of Fantastic Beasts 3 revealed his extensive support across Europe, but as for more trusted lieutenants, he has fairly few. Fantastic Beasts: The Crimes of Grindelwald introduced Rosier and Abernathy while
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