KFC Germany used the the anniversary of Kristallnacht as a promotional opportunity for fried chicken.
An hour later, the company sent out an apology message on the same app.
On Wednesday, KFC Germany sent out a message on its app urging customers to "commemorate Kristallnacht" and "treat themselves to more tender cheese with crispy chicken," according to multiple screenshots shared on Twitter.
An hour after it sent the first message, KFC sent out an apology, blaming the blunder on a system error, according to screenshots on Twitter.
Other notable cases include Pepsi's 2017 Kendall Jenner ad, which critics said appropriated the Black Lives Matter movement.