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2.
A group of Jewish volunteers during the Holocaust who would help the Nazis exteriminate their own people. In return for their co-operation, these Jews would recieve clean bed linens, vodka and other luxuries unimaginable by the people they helped to eradicate. Every 4 months they're replaced by another crew, as uprisings have occured, particularily in Sobibor and Auschwitz-Birkenau.

Widely considered the most despicable people during this time, all of the Sonderkommandos who survived the death camps were brutally killed by captive Jews.
Sonderkommandos were worse than the Nazis.
by Wingman, 1st Degree June 03, 2006
 
1.
A working class Republican.

An adaptation of the word used to describe Jews that willingly worked for the Nazi's in the extermination camps.
Those Teabaggers working to get the Health Insurance Reform Bill repealed are a bunch of sonderkommando.
by Che Guacamole November 07, 2010