LARP -- LARPing---
I had to look that up.
In case I'm not the only one:
"Live Action Role Play"
LARPing and Violent Extremism | FBI: Law Enforcement Bulletin
Definitive practical and psychological distinctions between live action role play and violent extremism can help investigators during their pursuit of justice.leb.fbi.gov
I don't consider myself a LARPer by any means. But the fact the FBI has gone through the trouble of presenting it as being "dangerous and extremist" means they're afraid of it to some extent. Take that for what you will.