How will a new national security law affect different walks of life in Hong Kong?

HONG KONG (AP) — As Hong Kong passed a new national security law, the city that evolved from a swampy fishing village to a financial center embarked on another transformation, one that may redefine its role on the world stage and the liberties of its citizens.

For the government and supporters of Beijing, the legislation is the keystone in fulfilling a constitutional duty, heralding a new era focused squarely on economic prosperity. It will take effect on Saturday.

However, for those who value Hong Kong’s once-vibrant political culture and commitment to openness, the legislation exacerbates fears of dwindling Western-style civil liberties that are fundamental to its allure as a global financial hub.

Here's what you need to know about the new law.