“Flagged” is exclusively “users click flag, algorithm tipping point reached”. The site admins can offer guidance on how something could result in heavy flagging

“Flagged” is exclusively “users click flag, algorithm tipping point reached”. The site admins can offer guidance on how something could result in heavy flagging, and can override it if it seems like users weren’t acting in good faith. “Dead” is exclusively admins, and can only be overridden by a high karma site user vouching for it (which undeads it).