I'm not sure I'd accept the family's statement at face value. In fact that's the statement I'd expect out of them completely orthogonally to it's veracity.
Additionally I don't find the subsequent argument compelling. 'Sure Nixon hated hippies and blacks, but it wasn't an effective policy until workshopped by subsequent presidents, so targetting those groups couldn't have been the point" doesn't really hold a lot of weight for me.
On top of all of that, corroborating quotes seem to keep being removed from that wikipage, with an edit note that doesn't match the edit, pointing to brigading.
Additionally I don't find the subsequent argument compelling. 'Sure Nixon hated hippies and blacks, but it wasn't an effective policy until workshopped by subsequent presidents, so targetting those groups couldn't have been the point" doesn't really hold a lot of weight for me.
On top of all of that, corroborating quotes seem to keep being removed from that wikipage, with an edit note that doesn't match the edit, pointing to brigading.