Facebook and Twitter have reversed their decisions to ban a campaign ad by Republican congressional candidate Elizabeth Heng.

Heng, who is running in California’s 16th Congressional District, said the social media platforms rejected her campaign video ad about the communist crimes that led her family to flee Cambodia for the U.S.

The ad starts with graphic and stark images from the Cambodian genocide in the 1970s as Heng talks about her parents’ survival and her campaign mantra: “Great things can come from great adversity.”

Facebook deemed it “shocking, disrespectful or sensational content" and blocked Heng from placing it as an ad. Heng received a similar response from Twitter when she tried to advertise the video on that platform.

Eventually, Facebook removed the ban on the ad on August 8, and Twitter followed suit on August 16.

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"Upon further review, it is clear the video contains historical imagery relevant to the candidate's story. We have since approved the ad and it ran on Facebook," a Facebook spokesperson said.

A spokesperson for Twitter defended the initial decision to block the ad, but said the graphic imagery of the Cambodian genocide was fleeting enough, particularly given the tone of the video, so the ban was removed.

On "Fox & Friends" on Tuesday, Heng said it's "highly problematic" that Facebook and Twitter revoked her ability to tell her family's story and tried to determine what history gets to live on.

She argued that this is another example of conservatives facing censorship on social media.

"We are seeing how conservative voices continue to be stifled and silenced by liberal tech giants," she said. "And this is a huge problem."

Heng said she was fortunate that she is running for office and had a national platform to raise awareness about her content being restricted on social media.

"What about for all the other individuals that don't have this ability?" she wondered. "How many voices are being stifled out there?"

Watch the "Fox & Friends" segment above.

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