Callum Parslow’s extreme beliefs were known to police when he stabbed an Eritrean man, but what lay behind his journey from bedroom fanaticism to attempted murder

When neo-Nazi terrorist Callum Parslow walked into a ­countryside hotel on 2 April and stabbed an ­asylum seeker in the chest, it was not the first time he had come to the attention of the police.

The 31-year-old computer programmer was on bail, having been arrested four months earlier for sending racist and sexual messages to a black female journalist. The mindset that drove his attack was clear.