He had provided public support to the Chinese government in forcibly setting up the national security law in Hong Kong, declaring that Hongkongers must not violate Chinese standards of national security.

他曾公開支持中國共產黨政府在香港強行實施國家安全法，剝奪香港市民各項自由，聲稱香港人不得逾越中國共產黨所定下之模糊「國家安全底線」。

Reference: 【專訪】管浩鳴撐港版國安法　籲港人勿挑戰中央底線：用愛感動她 (2020 May 28). HK01. https://www.hk01.com/%E6%94%BF%E6%83%85/478461/%E5%B0%88%E8%A8%AA-%E7%AE%A1%E6%B5%A9%E9%B3%B4%E6%92%90%E6%B8%AF%E7%89%88%E5%9C%8B%E5%AE%89%E6%B3%95-%E7%B1%B2%E6%B8%AF%E4%BA%BA%E5%8B%BF%E6%8C%91%E6%88%B0%E4%B8%AD%E5%A4%AE%E5%BA%95%E7%B7%9A-%E7%94%A8%E6%84%9B%E6%84%9F%E5%8B%95%E5%A5%B9