Anti-vaxxers are often deeply suspicious of all institutions and many now believe the pandemic was a hoax meant to restrict our freedoms.
A new group, which appears to have been founded last month, has started holding military-style training sessions around the country via a messaging app.
Members say they want to plan direct action against police, vaccination centers, politicians and anyone else deemed complicit.
In this special feature, we went to their most recent gathering at a country park in Staffordshire.
Producer: Luke Denne.