If you look for something all the time, you will find it. That's because the problem is existing primarily in your own mind, and you see it reflected in the world around you. You frequently see it even where it doesn't actually exist.

Some of the principle members of the cast of Star Trek have been Jews. Leonard Nimoy and William Shatner are Jews. It seems really rather ludicrous to think that the show they played such a big part in would create an alien race, the Ferengi, as a deliberate quasi-Jewish evil stereotype. It's absurd, in fact.

Gene Roddenberry was the primary creator of the show's philosophical outlook, and his beliefs are summarized below by Wickipedia:

"Although Roddenberry was raised as a Southern Baptist, he did not embrace the faith; he viewed religion as the cause of many wars and suffering in human history. Roddenberry considered himself a humanist and an agnostic atheist.[11]

According to Brannon Braga, "In Gene Roddenberry's imagining of the future [...] religion is completely gone. Not a single human being on Earth believes in any of the nonsense that has plagued our civilization for thousands of years. This was an important part of Roddenberry's mythology. He, himself, was a secular humanist and made it well-known to writers of Star Trek and Star Trek: The Next Generation that religion and superstition and mystical thinking were not to be part of his universe. On Roddenberry's future Earth, everyone is an atheist. And that world is the better for it."[cite this quote] This would seem to contradict the Star Trek episodes as aired; in an original series episode, Captain Kirk refers to the fact that mankind is largely monotheistic; the episode "Data's Day" of The Next Generation refers to a presently occurring Hindu festival.

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From watching pretty well all the shows in the first series and Star Trek Next Generation, I would say that the show absolutely went out of its way to promote every form of non-prejudice, of equality for all races, of equality for men and women, indeed every sort of equality, freedom, and social justice.

But if someone is determined to imagine that the Ferengi are an anti-semitic stereotype, then there's nothing anyone else will ever do to convince them otherwise, is there?

It's like the guy who tells you that all his neighbours and the people in his town secretly hate him. And you find out later that it isn't so. But will he ever believe that? Will you ever convince him that he's in error and that his neighbours and the people in his town don't hate him...that they mostly aren't even thinking about him? Not a chance. It's not even worth the trouble of trying, matter of fact.