Two Beijing-backed newspapers in Hong Kong have printed full-page attacks on the city’s last active protest group, saying their earlier move to delete online posts allegedly breaching the national security law showed the activists had a “guilty conscience.” The League of Social Democrats (LSD), one of Hong Kong’s last active pro-democracy groups, came under fire on Tuesday by Chinese state-backed newspapers Ta Kung Pao and Wen Wei Po. It came around a week after the activist group said it was “forced to delete” some online posts, citing alleged violations of the Beijing-imposed security legisl…