The Hong Kong independent online news portal Citizen News has said it will cease operations from Tuesday in the face of what it described as a deteriorating media environment in the Chinese-ruled city and to ensure the safety of its staff. “Regrettably, the rapid changes in society and worsening environment for media make us unable to achieve our goal fearlessly. Amid this crisis, we have to first make sure everyone on the boat is safe,” Citizen News, which was established in 2017, said in a statement. Pro-democracy activists and rights…