An organism that grows, feeds, and is sheltered on or in a different organism while contributing nothing to the survival of its host;
one who habitually takes advantage of the generosity of others without making any useful return.
Bankers parasite off the people. And people who refuse to earn their own living when they easily could are parasiting off the talents and efforts of others - parasiting off even those who have given their lives to exposing the parasite conspiracy (as I know from personal experience with 'loving' people who know no other lifestyle except being a parasite - see right hand column from 'Tin Soldier' downwards).
Indeed, we live in a parasite society right down to the parasites that feed off the human body. This is what we can do about it.
A video by Jay4louise