Sankirtana means congregational chanting of God's names. No meat, no fish, no eggs - eating food prepared for and offered to God. We have to avoid needless violence.
Devotees see other creatures as spiritual living beings.
Though these creatures may be less intelligent. By the subtle laws of karma, the suffering we cause others will come back looking for us. By nature's arrangement we have plenty of fruits, vegetables, grains, milk products, and other innocent food. We should content ourselves with this and be happy. It lets the reader discover the health and economic advantages as well as the important ethical and spiritual considerations of a Krsna conscious approach to diet and nutrition.