Truth deniers — or is that what they want you to think?

Conspiracy theories multiplied when the internet era began because they allow believers to think they are a part of a heroic group who see past official versions, says Donal O’Keeffe.

A leading British academic has warned that a new internet-based generation of Holocaust deniers is emerging through “gateway” conspiracy theories.

Professor Nicholas Terry, a history lecturer at Exeter University, has spent the past decade studying the spread online of Holocaust denial.