people will fight to the death

If people live on earth thinking that the source of their livelihood, their food, shelter and community comes from trees, rivers, lakes and nature – people will fight to the death to protect their livelihood. They will fight to the death to defend the trees, rivers, lakes and streams.
If people live on earth thinking that the source of their livelihood, their food, shelter and community comes from supermarkets, technology and man made ideologies – people will fight to the death to protect their livelihood. They will fight to the death to defend the supermarkets, economy, philosophy and civilisation.