I've seen inadvertent symbolism that resembles a swastika a lot more closely than the Manchester piece, and I personally/professionally shudder every time I create a kaleidoscopic image (with a texture maker) that even comes close to the symbol Hitler lifted from our Native Americans.

As I try to err on the side of caution, I also feel a little constrained when I swing to the opposite extreme of being PC and having sensitivity to any people on this planet, because there are those who will read the worst into everything.

-g