An Oakland baker says her Facebook page was flooded with negative reviews after she shared a video of a birthday cake decorated with the phrase, "Kill Nazis."

Ashley Shotwell posted a video of the black-and-red confection on social media Wednesday afternoon. Hours later, she says the Facebook video had been shared at least 10 times. Typically, her videos aren't shared at all.

Shotwell also found her page inundated by about 200 negative reviews, some of which claimed they purchased cakes filled with maggots.

"There were also a bunch saying they came into my bakery and I yelled at them about communism," Shotwell said. "I don't even have a storefront."

She suspects alt-right groups are responsible for the spread of the video, which Shotwell has since deleted from Facebook page, as well as the slew of one-star ratings.

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Most of the negative reviews have been reported and removed from her Facebook page, but 164 remained as of Saturday evening. Those reviews have been countered by 1,200 five-star ratings from friends and customers. Shotwell says she had about 20 ratings, prior to Thursday.

Wrote one reviewer: "So a bunch of Nazis decided to give this lady a hard time with fake one-star reviews because she's not a white supremacist. Too bad for them that they just gave this lady a bunch of free publicity, and 5-star reviews, and very likely a lot of new business."

According to Shotwell, a customer requested the "Kill Nazi" cake after being inspired by a "Resist Fascism" cake on her Instagram page. She says she didn't think twice about completing the customer's order, having received no negative feedback on her sprinkle-covered "Fascism" creation.

While Shotwell says she has no problem making cakes that "take a stance against fascist ideals," she might think twice before baking another "Kill Nazi" dessert.

"I'd probably suggest it say 'Punch Nazis' instead," she said.

Read Michelle Robertson’s latest stories and send her news tips at mrobertson@sfchronicle.com.