Karl Liebknecht was a prominent German socialist and a leading figure in the early 20th-century labor movement. Born in 1871, he became politically active as a member of the Social Democratic Party, advocating for workers' rights and socialism. His opposition to World War I was notable, as he opposed the war on both moral and ideological grounds, leading to his expulsion from the party. Liebknecht’s stance on the war marked a significant turning point in his political career, as he began to align more closely with revolutionary movements aiming for a socialist revolution in Germany. Liebknecht co-founded the Spartacus League, which later evolved into the Communist Party of Germany (KPD). His commitment to revolutionary socialism drove him to strengthen the working-class movement in Germany. He played a critical role in organizing protests and strikes against the war and the prevailing social conditions. His activities garnered significant attention and support from workers but also led to confrontations with government authorities. Liebknecht's radical beliefs and actions ultimately defined his political legacy, as he emerged as a symbol of resistance against militarism and capitalism. In the aftermath of World War I, Liebknecht became a key figure in the German Revolution of 1918. He called for a proletarian revolution to establish a socialist government. However, the revolution faced significant challenges, and Liebknecht was arrested after a failed uprising in January 1919. His dedication to the communist cause and his vision for a more equitable society was unwavering until his assassination by the Freikorps. Today, Liebknecht is remembered as a martyr for the socialist movement and a figure of inspiration for leftist activists around the world. Karl Liebknecht was a significant German socialist leader born in 1871, known for his fervent advocacy of workers' rights and opposition to World War I. Initially a member of the Social Democratic Party, he was expelled due to his anti-war stance and shifted towards revolutionary socialism. He helped form the Spartacus League, which became the Communist Party of Germany, and was a major player in the labor movement. His actions aimed at mobilizing the working class against war and social injustice cemented his reputation as a key revolutionary figure. Liebknecht's involvement in the German Revolution of 1918 was pivotal, although he was ultimately arrested and assassinated in 1919, marking him as a martyr for the socialist cause and an enduring symbol of resistance against oppression.