Did anyone see the reference to Hitler in Harry Potter and the Deathly Hallows?

Spoiler Warning Don't read ahead if you haven't read the book: Grindlewald was Hitler it was so obvious. In the book it says that in 1945 he lost power (around the same time as Hitler.) He had his own symbol that upset Krum (kinda like nowadays if someone was to wear a Nazi sign) And he wanted the purification of the race, not purebloods like Voldmort, but he wanted to put Muggles in their rightful place and rule them and he believed he was better then them. (Kinda like Hitler except with the jews, gays, gypsies, whatever. Did anyone else notice the symbolism there?