Ciaran O'Connor: Why do white men become radicalised by conspiracy theories?

There is not one easy, neat explanation for why someone becomes radicalised, though often a person’s perceived loss of status or a feeling their community is coming under existential threat can play a significant role in radicalisation

Katherine Mielnicki outside Roberta Drury's funeral service last Saturday in Syracuse, New York.  Ms Drury, 32, was the youngest of the 10 killed during a mass shooting at a supermarket in Buffalo. Picture: AP /Lauren Petracca

“I was supposed to do this two months ago. But now I finally feel actually ready.” 

Payton Gendron wrote these words in an online diary days before carrying out a deadly racially-motivated mass shooting at a supermarket in Buffalo, New York.