This article investigates the transformative role of Hindi-language journalism during a pivotal and turbulent time in Indian nationalism, covering the fifteen years from the Partition of Bengal in 1905 to the launch of the Non-Cooperation Movement in 1920. It posits that Hindi journalism underwent a significant evolution during this period, moving from the cautious constitutionalism characteristic of the Congress's moderate tradition to a more assertive, mass-oriented, and culturally rooted approach to nationalism. This shift not only anticipated but also facilitated the Gandhian turn in Indian politics. The article tracks this transformation through a detailed examination of key publications, influential editorial figures, and significant political events, including the Swadeshi agitation of 1905-08, the Lucknow Pact of 1916, the Rowlatt Act agitation of 1919, and the Jallianwala Bagh massacre. It analyses the rhetorical and ideological strategies employed by Hindi journalism, including religious nationalism, economic critique, swadeshi (self-reliance) mobilisation, and the politics of memory and martyrdom.