<human>:  What is the meaning behind the song “Imagine” by John Lennon?
<bot>: The song "Imagine" by John Lennon is a song about hope and peace, encouraging the listener to imagine a world without hatred, greed and suffering and promote togetherness and unity. The message of the song is to think beyond the limitations of nationality and social hierarchies, and to imagine resistance and change in a world where peace, love and understanding prevail.