There was a man named Alex who lived in Tokyo, Japan. He had a youtube channel named playbacklapompe. This man has been uploading videos/ news/ updates regarding the radiation in Japan. Recently today, all his videos regarding the radiation were forcefully removed by YouTube.

Why do you think they did so?

I don't see why they would do that. The video's sound innocent according to your description.

I don't understand neither. It seems as though only his videos regarding Japanese radiation updates were removed. TEPCO, IAEA and the Japanese Government definitely had something to do with it though. They did say he was "unclean due to some networking problems".