How did Rabindranath Tagore have an effect on British Colonialism?

Tagore opposed imperialism and supported Indian nationalists, these views were first revealed in Manast, which was mostly composed in his twenties. He urged the masses to avoid victimology and instead seek self-help and education, and he saw the presence of British administration as a "political symptom of our social disease". He maintained that, even for those at the extremes of poverty, "there can be no question of blind revolution"; preferable to it was a "steady and purposeful education".

Such views enraged many. He escaped assassination—and only narrowly—by Indian expatriates during his stay in a San Francisco hotel in late 1916; the plot failed when his would-be assassins fell into argument. Two of Tagore's more politically charged compositions, "Chitto Jetha Bhayshunyo" ("Where the Mind is Without Fear") and "Ekla Chalo Re" ("If They Answer Not to Thy Call, Walk Alone"), gained mass appeal, with the latter favoured by Gandhi. Though somewhat critical of Gandhian activism, Tagore was key in resolving a Gandhi–Ambedkar dispute involving separate electorates for untouchables, thereby mooting at least one of Gandhi's fasts "unto death".

Tagore renounced his knighthood, in response to the Jallianwala Bagh massacre in 1919.