Just a note on Christianity and the Hippie movement. There was a lot of the 'Jesus movement' associated with that period of time also. Religion and spirituality was very inclusive among the hippie movement and in fact there were many songs created in that era that focused on Jesus' love,  Jesus Christ Superstar was a HUGE hit - don't discount the overlapping of Christian principles and ideals that were intertwined with it, as well as Hinduism and Buddhism etc.