Something being flagged doesn't automatically make it go away. The moderators review flagged posts (they are flagged for review) and decide if it should stay up

Something being flagged doesn't automatically make it go away. The moderators review flagged posts (they are flagged for review) and decide if it should stay up or not. The worst a mob can do is alert people that there's a decent number of users who don't think a post should be on the site, which is true.