Jake Angeli, aka horn man, is a Climate Change activist

"Jake Angeli, shamanic practitioner, leads the crowd in a yell before the march in solidarity with climate activism groups across the country to the Arizona State Capitol Building Friday, September 20, 2019.

Jake Angeli marches from the Maricopa County Courthouse to the Arizona State Capitol on Friday, September 20, 2019, to demand action on climate change.

The demonstrations Angeli participated in were part of the Greta Thunberg-linked climate change campaign, where “millions of youths around the world” protested to encourage governments to “do more to combat climate change — and do it faster.”
[link to thenationalpulse.com (secure)]