There is no unified "white" identity. I am white, my ethnicity is Romanian. There is no shared identity between me, and for example someone with German heritage. So to capitalize "White" is silly in my eyes.
edit: unified may have been a poor choice here. "Shared" is what I was getting at. Of course people across the US have different experiences and opinions.
Obviously people in different states lead different lives. It's still possible to have a shared identity through facing similar struggles and discrimination.
Just because I grew up in IL and my cousin grew up in CA doesn't mean we can't have a shared identity as Romanian-Americans either.
edit: I have amended this and my parent post to clarify I meant a shared experience, not a unified one.
Identities are generally fluid and reflect matters of degrees of commonality and shared experience.
In your case, there are certainly some things you share in common with Germans, e.g. you share an Indo-European linguistic heritage which you don't share, for example, with someone who has Japanese heritage.
Of course that's simply an academic point -- you're free to feel whatever degree of identity affinity you like, which is what matters. Identity is constructed.
Well sure, and this is what I believe is happening with the Black identity. Unified may have been the wrong word to convey what I mean.
I have zero reason to feel anything like that with a "white" identity, germans being just an example. There is no real anti-white discrimination in a systemic sense like what black people face, so I see no reason that white would warrant a capitalization. There is just no similar shared identity.