A possible conclusion is that the individual in black pointing is Aria Deutschland (Germany) at Hinomoto Sakura (Japan), condemning her for not having the same kind of reconciliation with actions leading up to and during the Second World War. The photographs at the top show numerous controversies regarding Japan, past and present (Tokyo trials, Kamikaze, Pearl Harbour attack, Yasukuni Shrine, Rising Sun flag, history text books, militarism, Burma death railway?, the Imperial family’s immunity?, naval orders to execute any POWs at sea?).
Behind Hinomoto Sakura, a South Korean and Chinese, who slightly resembles Eric Cartman from South Park (and with bloody clothes) appear quite smug. The girl hugging the Chinese communist’s leg Is possibly meant to represent Taiwan (showing the clash between loyalty to the mainland and an interest in Japanese stuff).
Behind the previously mentioned three, a Vietnamese, Indian, Arab and some Southeast Asian or Indian Ocean country (most likely Indonesia, but possibly Malaysia or Seychelles) stand. The latter two appear concerned with Germany’s behaviour towards Japan whilst the former two stare at the yank and Anglo.
In the background to the left, a yank and an Anglo discuss unrelated matters, seemingly oblivious to the main focus of the class.