Complex sentence: Suranjan, their son, believes that nationalism will be stronger than communalism, but is progressively disappointed and finds himself adopting communal reactions which contrast entirely with the ideology of patriotism he has always had faith in.
Split into simpler sentences: Suranjan, their son, believes that nationalism will be stronger than communalism but is progressively disappointed. He finds himself adopting communal reactions that contrast entirely with the ideology of patriotism he has always had faith in.