A Zainichi North Korean is a North Korean National who lives in Japan. Almost all Zainichi North Koreans have been in Japan for decades, because North Korea does not let it's citizens out. They are a very clannish people, and tend to goto their own schools (comprising a curriculum based around the history of the dear leader Kim Jong-Il), work at their own companies, and socialize within their own circles - all while being under the watchful eye of the Chongryon, a North Korean Nationals Association.
Although North Korea related groups are known to tell their people what to say, there is no information to the contrary so as far as I know this is a genuine speech. What do you think?