Both politics and war are major themes in Levertov's poetry. Levertov was published in the Black Mountain Review during the 1950s, but denied any formal relations with the group. She began to develop her own lyrical style of poetry through those influences. She felt it was part of a poet's calling to point out the injustice of the Vietnam War, and she also actively participated in rallies, reading poetry at some. Some of her war poetry was published in her 1971 book To Stay Alive, a collection of anti-Vietnam War letters, newscasts, diary entries, and conversations. Complementary themes in the book involve the tension of the individual vs. the group (or government) and the development of personal voice in mass culture. In her poetry, she promotes community and group change through the imagination of the individual and emphasises the power of individuals as advocates of change. She also links personal experience to justice and social reform.
Suffering is another major theme in Levertov's war poetry. The poems "Poetry, Prophecy, Survival", "Paradox and Equilibrium", and "Poetry and Peace: Some Broader Dimensions” revolve around war, injustice, and prejudice. In her volume “Life at War”, Denise Levertov attempts to use imagery to express the disturbing violence of the Vietnam War. Throughout these poems, she addresses violence and savagery, yet tries to bring grace into the equation. She attempts to mix the beauty of language and the ugliness of the horrors of war. The themes of her poems, especially “Staying Alive”, focus on both the cost of war and the suffering of the Vietnamese. In her prose work, The Poet in the World, she writes that violence is an outlet. Levertov’s first successful Vietnam poetry was her book Freeing of the Dust. Some of the themes of this book of poems are the experience of the North Vietnamese, and distrust of people. She attacks the United States pilots in her poems for dropping bombs. Overall, her war poems incorporate suffering to show that violence has become an everyday occurrence. After years of writing such poetry, Levertov eventually came to the conclusion that beauty and poetry and politics can't go together (Dewey). This opened the door wide for her religious-themed poetry in the later part of her life.