Communalism refers to using religion for political gain by exploiting differences between religious communities. It originated and grew in British India as the British employed a strategy of divide and rule by exacerbating religious tensions. Communalism remains a challenge for Indian democracy as some political elements continue to use it to divide the nation. To combat communalism and promote secularism, the document recommends measures like openly opposing communal forces, punishing communal violence, and reforming education and media to reduce religious prejudice.