Xenophobia is the fear and/or hatred of outsiders, especially immigrants. Xenophobia is a hallmark of far-right politics, with racism, ethnic nationalism, and nativism motivating the hatred behind anti-immigrant feelings. Notable examples of xenophobia include the Sonno joi movement in 1860s Japan, the Boxer Rebellion in 1890s China, the Nazi Party's sentiment from the 1920s to the 1940s, the First Red Scare in the United States in the 1920s, the neo-Nazi movement in Germany in the 1990s, and the alt-right movement in the 2010s.