Periyar E.V. Ramasamy, known simply as Periyar, was a prominent social reformer and activist in India during the 20th century. He was a staunch advocate for self-respect, rationalism, and the rights of marginalized communities, particularly the lower castes and women. Through his relentless efforts, Periyar aimed to eradicate caste-based discrimination and promote equality, challenging the traditional norms that upheld the caste system. His vision extended beyond mere reform; he envisioned a society where individuals were free from the shackles of caste and superstition. Periyar founded the Self-Respect Movement, which encouraged individuals to reject their caste identities and embrace self-worth. He emphasized the importance of education and critical thinking, encouraging people to question societal norms. Through public speeches, writings, and organizing rallies, Periyar mobilized thousands, inspiring a generation to fight against social injustice. His legacy includes not only the upliftment of marginalized sections of society but also the promotion of women's rights, as he believed in the empowerment and equality of women in all aspects of life. Throughout his life, Periyar's ideas and activism made a significant impact on Indian society. His thoughts on rationalism and atheism challenged religious dogmas, while his political engagement with issues like separatism and linguistic identity paved the way for various movements in Tamil Nadu and beyond. Periyar's contributions continue to be celebrated and debated, marking him as a pivotal figure in the struggle for social justice in India. Periyar E.V. Ramasamy was a key figure in the social reform movement in 20th-century India, advocating for equality and the rights of marginalized groups. He founded the Self-Respect Movement, which challenged the caste system and encouraged individuals to embrace self-worth and rational thought. His legacy includes significant advancements in women's rights and a lasting influence on social justice movements, ensuring his ideas remain relevant today.