It may be because there are multiple posts. The first may have been flagged by people who didn't want to see the story, the later posts may have been flagged by

It may be because there are multiple posts. The first may have been flagged by people who didn't want to see the story, the later posts may have been flagged by both those who didn't want to see the story and those who didn't want duplicates of the same news (I'm in the latter bucket).