Anyone who is interested in learning about historical Gaelic pre-Christian religion or just general Gaelic and Celtic Recon/Polytheism should stay away from people and groups that practice Sinnsreachd.
They’re the Gaelic version of the Norse/Germanic white supremacists and Neo-Nazis. I’ve never seen them off the internet, but people who know about them and have encountered them say they are often violent. The best advice is just to walk away and ignore them. They’re pretty easy to spot.
They try to make the Triskel into the Nazi swastika and spout stuff about following “the true ways”, how “foreign cultures and religions have tainted Gaelic culture” and how you should be genetically Irish/Scottish descent to practice any form of Gaelic religion.
I’ve known about them for a while, but under recent circumstances, I feel it’s important to let newbies know and warn them. It’s our role as older, more experienced Gaelic Polytheists/Recons to help younger people find their feet and protect them from people like that.