Everybody here can understand what BBC has said, but what make me laugh is the characters on the background banner
I translated it on the downside:
洋奴:slaves of the west 炮灰:cannon foldder
身在福中不知福:growing up in happiness but take it for granted
可怜又可悲: pathetic and sad
This picture clearly showed how the West medias fool their people and brainwash them. Since most of the west can not understand Chinese, they can use the anti-protestors' picture to propaganda to their people and say that these are HK protestors.