Twitter has reversed its block on a Republican’s campaign ad depicting gruesome images of Cambodia’s brutal Khmer Rouge regime after the candidate accused the social-media site of censorship. A Twitter spokesperson confirmed the video had been “momentarily” rejected due to inappropriate content, which prevented it from being promoted. But it then reversed its decision. “Upon further review of the ad, we feel that the imagery that violated the inappropriate-content policy is fleeting enough, particularly given the overall tone and intention of the video,” they said. Elizabeth Heng, who’s running against incumbent Rep. Jim Costa in California, said: “The tech companies are holding all of the power and have no apparent desire to correct biased censorship of their platforms.” Twitter said it did not block the video entirely, but temporarily prevented it from being promoted as an advertisement.