YAMATO HOTEL INCIDENT, Heroic Incident Tearing of the Dutch flag

After the Proclamation of Indonesian Independence and the issuance of the Soekarno government's edict on 31 August 1945 which stipulated that starting 1 September 1945 the national flag of the Red and White was to be flown continuously throughout Indonesia, the movement to raise the flag increasingly spread to all corners of the city of Surabaya.
A group of Dutch people under the leadership of W. V. C. Ploegman on the evening of 19 September 1945, precisely at 21.00, raised the Dutch flag (Red-White-Blue), without the approval of the Surabaya Regional Indonesian Government, on a pole on the top level of the Yamato Hotel, north side. The next day the youth of Surabaya saw it and became angry because they thought that the Dutch had insulted Indonesian sovereignty, wanted to restore power to Indonesia, and insulted the movement to raise the Red and White flag that was taking place in Surabaya.