No one has stepped forward to say they actually saw the swastika. There are only people who offer second and third hand stories that they were told someone else saw a swastika. There is no photo of said swastika, the photo that was offered as evidence was apparently a year old, so it looks like someone did an internet search for poop swastica images and found one.
Maybe one of their artistic types was finger painting..
“Creative Art of The Turd Reich”