Updated

Pizza Hut in Taiwan set off a wave of controversy after posting a Facebook advertisement offering “killer” deals on their food.

The campaign ran ahead of a five-day observation of the “February 28 incident” in remembrance of a government uprising that came to a violent end when thousands were killed on Feb. 28, 1947.

As many as 50,000 civilians were killed by then Taiwanese leader Chiang Kai-shek.

Pizza Hut's social media team decided to ask diners if they were "Ready to celebrate 2/28?" in an ad which first ran Thursday, reports Taiwan News. But the promo also had a line that referenced to its newly reduced pizza prices as “killer.”

“The most killer deal in Pizza Hut's history is on offer for a limited time only: For every takeaway large pizza you order online, we'll throw in two small pizzas and one 8-pc BBQ chicken for free," the chain said in the ad, according to China Post.

“Hurry and click to order. Enjoy the precious extended holiday with us — a pizza in one hand and BBQ chicken in the other!”

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Those who saw the ad, both in Taiwan and overseas, took to social media to vent their anger and shock.

After the ad went viral, the chain apologized and changed the wording to ask customers if they were simply “Ready for the holiday?”