Nationalism should be the biggest religion for everyone and a collective voice must be raised against the forces of Naxalism, terrorism, corruption and those who work against the nation's interests, Uttar Pradesh Chief Minister Yogi Adityanath said Saturday.

Speaking at an event here organised by Arya Samaj, a socio-religious organisation, he stressed that India is primarily an agricultural country in which "cow-based activities are worthy of being highlighted". A statement quoting Adityanath said his government has made substantial changes in the educational curriculum in Uttar Pradesh. In the school curriculum, the government has added information about the life of great personalities and revolutionaries of the past, the BJP leader said.