I'm also not really concerned what 'positives' their agenda might include, given the violence that is explicitly part of the ideology they are identifying with.
Even for those who aren't literally wearing symbols of the Nazi party, white supremacy isn't a non-violent ideology. It fundamentally seeks to supress, remove, or otherwise contain non-whites. Putting non-whites in camps is still violent. Expelling them from the country they were born into and lived in their entire lives is still violent. Etc. And if there's a "nice" white supremacist, who is "well, I think whites are better, but you know, live and let live, right?" I'm pretty sure they're not out marching.