[crooked-v]

It's really the same rule of thumb of stand-up comedy: punching up vs punching down. Western European and North American pan-national stereotypes are typically comfortably 'up' (though targeting specific ethnicities can become 'down').

[alexey-salmin]

Well, this kind of adds up because the "punching up vs punching down" rule never made sense to me either.

[GJim]

What a ridiculous statement!

Perhaps you would like to give us all a 'hierarchy of the races' so we can all judge who punches up or down? You can call it the Rassenkunde des deutschen Volkes.