Marcus Monzo, a 39 year old Brazilian martial artist who had lived in the UK since 2013.
He stabbed a 14 year old boy to death and seriously wounded several other people.
He was a Flat Earther, denied 9/11 ever happened, drank ayahuasca, and washed himself in his own urine, and drank his own urine as part of his New Age beliefs.
This is the type of schizo BS that following the advice and content of the Russel Brand, Alex Jones, David Icke, JFK Jr pipeline ends in.