https://www.gamespot.com/articles/bungie-explains-how-that-destiny-2-hate-and-intole/1100-6453360/

Earlier this week, it came to light that an armor piece in Destiny 2 shared a resemblance with a "hate symbol." Bungie swiftly apologised and removed the armor piece from the game (and the UI icon and preview screens are getting scrubbed next week). Now, the studio has shared some insight into how it happened, how the studio didn't find it sooner, and what steps the team is taking to make sure it does not happen again.

So how did it happen? The offending design was created in June 2015, Bungie said in its blog post. It came about as a result of Bungie's practice of referencing real-world art and other design elements. The item in question is believed to be the Kekistan flag, which itself is is inspired by Nazi imagery, according to Kotaku.