Noone is responsible for their parents' views. And when someone says something like "My father never lied to me" they are talking about something rather more personal, not about cranky ideas they ight have had. ("Lying" in any case doesn't mean saying somethig which is false, it means saying you believe something is true, when in fact you really believe it to be false.)

The Gospel account of the Passion has Jesus killed by the Roman occupiers, with the support of some collaborators among the Jewish authorities and population. The kind you get in any occupied country. In the same way that the deportation of Jews and Gypsies from occupied countries under the German occupation was not done without the help of locals and local police and so forth.

The anti-semitic thing is to pretend that this somehow means that there is guilt for this resting on the Jewish people at that time or throughout the ages, any more than upon the people of Rome.