I've created a new group to show solidarity with anti-fascism and opposition to other hate groups and individuals. No heavy deal, you don't have to do anything to show your solidarity other than joining the group, and maybe, if you feel you can, displaying the logo on your region or in your club to show that hate groups and anyone associated with them are not welcome.
Obviously those who want to get a little more involved are more than welcome to do so, such as arranging events with a prominent anti-fascist message, even if it's only displaying the logo on promotional materials, to much more ambitious things such as art displays that highlight the dangers of the extreme-right.
This isn't a political group, so you won't be bombarded with ideology, it's simply a group for those of us who share a similar belief, that all humans are worthy. I'll even go so far as to say that members should leave both their politics and their religion at the door, whilst anti-fascism is a political stance, it is one that crosses political boundaries. We don't even have to like each other to show solidarity, a point worth remembering.
To avoid all doubt, fascists and their fellow-travellers, (Trumpists, Faragists, Lepenists etc are not welcome! Prospective members are vetted and are subject to approval, which means it's a safe space for the wary.