INTERNATIONAL AFFAIRS European Notes G P D IT is exactly five years since the famous Munich Olympics massacre took place. Once again, Germany seems to be visited by violence and terrorism. Last month, a banker from Frankfurt, Jurgen Ponto, was killed outside his large villa near Frankfurt. He was packing his things for a holiday in Latin America. Last week, Schleyer has been kidnapped. An enormous ransom has been demanded. A neutral middleman, a lawyer from Geneva who is chairman of the International Federation for Human Rights, has been appointed. One does not know what will come of this exercise. Violence is in the air. People are angrily and anxiously discussing what this terrorism means. The Red Army Fraction, as the kidnappers of Schleyer call themselves, is a very peculiar group. A Swiss woman seriously believed that it was being financed by the GDR and the Soviet Union, Perhaps the details of the RAF are not as important as the feeling that violence is here, and is here to stay.