> The intersection of nationalism and archaeology can get _really_ weird, and depending on how deep in they are

A lot of political mythology is based on a group of people being either ethnically homogeneous or ethnically non-homogeneous.

For example a lot of Nazi ideology would've been undermined if it could've been shown that Germans were ethnically non-homogeneous. However it would've been supported if it could've been shown that other groups of people like WW1 German Army deserters were ethnically homogeneous. Or undermined again if there were non-German ethnic homogeneity in WW1 heroes who participated in the German army.