tracing money is not as simple as you think. money comes from the banc press and circulates. What gideon is trying to say is that its very easy to become a fascist. Smear and accusations because of some donation made by anywho in order to "disclose" the receiver as "intended" is much easier to achieve than protecting the moral values of a civilized democratic society.
Knesset passes 'Norwegian Law' allowing ministers to resign their seats, remain in cabinet (Haaretz)
from the article: When did it become illegal to be a Leftist in Israel?