The dirty secret is how many of those anti-semitic Communist/Leftist/Democrats are Jews themselves (at least by heritage that is).
The most vicious anti-Catholics were raised Catholic. The most vicious anti-Mormons are former Mormons. And the most vicious anti-semites are Leftist secular Jews.
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On the mark yet its hardly a dirty secret.
Because we have become addicted to tee-vee, we no longer read
and reflect, loosing the perspective of history. Marx was a Jew.
Additionally, some 97% of the members of Lenin's Comintern in 1918
were Jews who russianized their names to escape rejection and worse;
most notably Davidovich Bronstein (Leon Trotsky).