“Nakem” means “revenge” in Hebrew. They planned to poison water mains to achieve their goal, but were thwarted by police. Later, they poisoned thousands of loaves of bread which were actually consumed, resulting in widespread illness, although no deaths are known to have occurred as a result.
To be fair, it wasn’t really possible to be german at the time of the holocaust and have no idea what was going on. Anything short of attempting to stop the holocaust means complacency with the holocaust, which effectively makes you a nazi.
And to be perfectly clear I am not claiming that all germans in the modern day are nazis. Merely that those that did not attempt to stop the holocaust were almost as guilty as the perpetrators.