The Honda Civic was introduced in 1973, and sold well due to its high fuel-efficiency. By 1975 Toyota overtook Volkswagen as the top-selling imported automobile brand in the U.S., with over a million cars sold per year by this point. Other popular compact cars included the Toyota Corolla and the Datsun Sunny, in addition to other cars from those companies and others such as Subaru, Mitsubishi, and Mazda. Society Role of women in society The role of women in society was profoundly altered with growing feminism across the world and with the presence and rise of a significant number of women as heads of state outside monarchies and heads of government in a number of countries across the world during the 1970s, many being the first women to hold such positions. Non-monarch women heads of state and heads of government in this period included Isabel Perón as the first woman President in Argentina and the first woman non-monarch head of state in the Western hemisphere in 1974 until being deposed in 1976, Elisabeth Domitien becomes the first woman Prime Minister of the Central African Republic, Indira Gandhi continuing as Prime Minister of India until 1977 (and taking office again in 1980), Sirimavo Bandaranaike, Prime minister of Sri Lanka (Former Ceylon) and first female head of government in the world, re-elected in 1970, Prime Minister Golda Meir of Israel and acting chairman Soong Ching-ling of the People's Republic of China continuing their leadership from the sixties, Lidia Gueiler Tejada becoming the interim President of Bolivia beginning from 1979 to 1980, Maria de Lourdes Pintasilgo becoming the first woman Prime Minister of Portugal in 1979, and Margaret Thatcher becoming the first woman Prime Minister of the United Kingdom in 1979. Both Indira Gandhi and Margaret Thatcher would remain important political figures in the following decade in the 1980s. Pope Paul VI recognized the popularity of Catholic feminists, but ultimately held to tradition when it came to leaving bishops, priests, and deacons a male-only position. Social movements Anti-war protests The opposition to the War in Vietnam that began in the 1960s grew exponentially during the early 1970s. One of the best-known anti-war demonstrations was the Kent State shootings. In 1970, university students were protesting the war and the draft. Riots ensued during the weekend and the National Guard was called in to maintain the peace. However, by 4 May 1970, tensions arose again,