> Maybe something like this is why whites commit suicide so much more than blacks in America
Whites officially commit suicide more than blacks because blacks who are even slightly inclined to self-destruction find it all to easy to get into situations that produce death by means that won't officially be viewed as suicide.
> Blacks suffer in many ways but at least they're allowed to make a community just about themselves
Whites can, and do, make communities just about themselves. Now, it's true that the ones that aren't purely and nakedly about virulent racism usually do it about some more specific subset of Whiteness (like a particular national/ethnic identity like Italian or Irish, etc.), probably because Whiteness as such (in America, at least) is not a particularly strong shared experience and identity (some other racial identities, particularly Black identity, are, but largely as a consequence of extended subjugation by the broader society which deliberately destroyed other identities in the group and produced a new common shared experience.)