What DC(?) comic had grandparents wanting custody over their grandchildren because of their racist parents?

Question

The children were an Aryan folk singing duo. The grandparents hated it and wanted custody. There was a scene where I want to say Hawkgirl abducted the parents and children while they were in an elevator to have a meeting with the grandparents.

Answer 1

I can't remember what comic that's from specifically (it sounds so familiar, though), but it sounds pretty clearly like it's based on real life singing duet Prussian Blue http://en.wikipedia.org/wiki/Prussian_Bl...

I want to say it might have been in the Justice League animated series even? Yes, yes I think it was! Can't remember what episode, though.