organizations, and lobbying networks in order to influence the politics of their host countries, notably the United States, the ROC's main ally at the time, though they would not be very successful until much later. Within Taiwan, the independence movement was one of many dissident causes among the intensifying democracy movement of the 1970s, which culminated in the 1979 Kaohsiung Incident. The Democratic Progressive Party (DPP) was eventually formed to represent dissident causes. Multiparty period After the lifting of martial law in 1987, and the acceptance of multi-party politics, the Democratic Progressive Party became increasingly identified with Taiwan independence, which entered its party platform in 1991. At the same time, many overseas independence advocates and organizations returned to Taiwan and for the first time openly promoted their cause in Taiwan, gradually building up political support. Many had previously fled to the US or Europe and had been on a blacklist held by KMT, which had held them back from going back to Taiwan. Where they had fled, they built many organisations like European Federation of Taiwanese Associations or Formosan Association for Public Affairs. By the late 1990s, DPP and Taiwan independence have gained a solid electoral constituency in Taiwan, supported by an increasingly vocal and hardcore base. As the electoral success of the DPP, and later, the DPP-led Pan-Green Coalition grew in recent years, the Taiwan independence movement shifted focus to identity politics by proposing many plans involving symbolism and social engineering. The interpretation of historical events such as the February 28 Incident, the use of broadcast language and mother tongue education in schools, the official name and flag of the ROC, slogans in the army, orientation of maps all have been issues of concern to the present-day Taiwan independence movement. The movement, at its peak in the 70s through the 90s in the form of the Taiwan literature movement and other cultural upheavals, has moderated in recent years with the assimilation of these changes. Friction between "mainlander" and "native" communities on Taiwan has decreased due to shared interests: increasing economic ties with mainland China, continuing threats by the PRC to invade, and doubts as to whether or not the United States would support a unilateral declaration of independence. Since the late 1990s many supporters of Taiwan independence have argued that Taiwan, as the ROC, is already independent from the mainland, making a formal declaration unnecessary. In May 1999, the