The rather obvious close correspondence between common black cultural attitudes and common Southern cultural attitudes, for instance. Somebody less ideologically inclined might rather suspect that there might be a link, such as there just may possibly be a link between being of Irish ancestry and being Catholic.
...........
Of course there's a link.
But once you've said that, your work has only (barely) started. This is where actual research comes into play.
Between saying 'all is made of atoms' and the hydrogen bomb there falls a long shadow.
.d.