KKK:
Disorganized Bunch of Rednecks.
Most members kicked out of the Nazi party for being useless inbred Angloids.
If the KKK ran post-Weimar Germany-- well, they couldn't seeing as they're all Angloids and less Aryan than your average Half-Jew.
But if they DID run post-Weimar Germany-- well, they would fail to seize power, by making the marxist terrorists look brave and noble in comparison to the KKK's "Let's hide our faces with hoods because we're scared of those Jews tracking us down and beating us with a menorah" behavior.
But if they DID manage to run post-Weimar Germany, they'd spend all their time burning things, fucking their sisters and getting drunk.
France could ship all their white flags to the KKK for recycling, since Germany would eventually become the first nation to inbreed themselves out of existence.