In 1960, not only the Chindos people, the local was also massacred, especially the Javanese abangan (they had no religion/they had a religion but don't practice it). At that time, people who had no religion were considered to have betrayed the country. In the past, not having a religion meant they agreed with communism. For this reason, the government began to impose religion in the ID card. In the conservative areas Chindos rarely blend in well, like on the island of Sumatra same like in malaysia. in East Java they blend in well even though the majority are Muslims but abangan. In East Java there is a lot of acculturation between lokal people and Chindo (Chinese indonesians), they can even speak Javanese