The ROC administration of Taiwan under Chen Yi was strained by increasing tensions between Taiwanese-born people and newly arrived mainlanders, which were compounded by economic woes, such as hyperinflation. Furthermore, cultural and linguistic conflicts between the two groups quickly led to the loss of popular support for the new government, while the mass movement led by the working committee of the Chinese Communist Party also aimed to bring down the Kuomintang government. The shooting of a civilian on 28 February 1947 triggered island-wide unrest, which was suppressed with military force in what is now called the February 28 Incident. Mainstream estimates of the number killed range from 18,000 to 30,000. Those killed were mainly members of the Taiwanese elite.