From an extensive and disconcerting YouTube reality check
"Members of the nation’s newly empowered far right — from grass-roots organizers to federal lawmakers — say their movement would not have risen so far, so fast, without YouTube’s recommendation engine.How YouTube Radicalized Brazil | NYT
New research has found they may be correct. YouTube’s search and recommendation system appears to have systematically diverted users to far-right and conspiracy channels in Brazil.
A New York Times investigation in Brazil found that, time and again, videos promoted by the site have upended central elements of daily life."