1. The trade union movement was led by All India Trade Union Congress (AITUC) founded in 1920. Lala Lajpat Rai was its first president and Dewan Chaman Lal its general secretary.
2. The major strikes during the 1920s included those in Kharagpur Railway Workshops, Tata Iron and Steel Works (Jamshedpur), Bombay Textile Mills, and Buckingham Carnatic Mills.
3. In 1923, the first May Day was celebrated in India in Madras.
