Although our knowledge of the Holocaust is based on historical evidence, in antisemitic speech, the mass murder is often downplayed and denied.
It is possible to say things without actually saying them. On such occasions, messages are only suggested, conveyed — or, implicated instead of being directly expressed.
Antisemitism discriminates against Jews simply because they are Jews. However, the idea of victimising a group of people just because of their ethnic background may sound too overtly racist to many.
By referring to these names, some speakers use an old rhetorical trick, synecdoche, which allows them to voice anti-Jewish hatred and, at the same time, deny antisemitism. They talk about the whole (Jews) by referring only to a part of it (Soros or Rothschild).