John Maclean was a Scottish politician and socialist, known for his strong advocacy for workers' rights and social justice. Born in 1879, he became a prominent figure in the early 20th century, particularly during the Labour Movement in the United Kingdom. Maclean was a member of the Independent Labour Party and was known for his opposition to World War I, which he viewed as a conflict driven by capitalist interests. In addition to his political activism, Maclean was also an educator and a writer. He played a significant role in the Red Clydeside movement, which sought to address issues of poverty and inequality in Scotland. His efforts led to his imprisonment for sedition, but he remained a key figure in the fight for social change until his death in 1923.