Ruining it for everyone

The Nazis did a lot of really bad things, and tainting the swastika in the West forever and always was one of them, leading even to the current attempts in the EU to ban the symbol, although it's really unclear how one actually bans a simple figure that has been in use for at least three millennia, spans cultures, is currently seen around the world, is part of ornamental borders and floors and temple columns, included in books on tessellations and origami, the logo of charitable organizations, etc. Lynne Rutter saw the lovely example of a decorative manji at the Sensoji Temple in Tokyo a few days ago. However, even there, the Nazi stigma still is felt as, since the war, all the new Buddhist manji in Japan are of the left-handed variety, not the right-handed isomer favored by the historical evil. Below, from a Tokyo shrine near Shibuya: