Yes, the guy with the horns is Jake Angeli. Here’s an article showing a picture of him at a protest against COVID-19 stay-at-home orders in Arizona:
https://www.azcentral.com/picture-gallery/news/local/phoenix/2020/05/03/coronavirus-arizona-protest-ducey-stay-home-order-outside-captiol/3075637001/
And there’s photos of him at burn loot and murder rallies