Formaldehyde said:
The concept of a Jewish conspiracy threatening Polish social order dates in print to the pamphlet Rok 3333 czyli sen niesłychany (The Year 3333, or the Incredible Dream) by Polish Enlightenment author and political activist Julian Ursyn Niemcewicz, written in 1817
I suppose you quoted this to "prove" that Poles started to be anti-Semitic very early on? Well, in such case - you failed to prove your claim.
The concept of a Jewish conspiracy threatening Ancient Roman social order dates at least to Publius Cornelius Tacitus:
http://www.jewishvirtuallibrary.org/jsource/History/tacitus.html
"(...) among themselves Jews are inflexibly honest and ever ready to shew compassion, though they regard the rest of mankind with all the hatred of enemies. (...)"
And the concept of a Jewish conspiracy threatening German social order dates at least to Martin Luther:
http://en.wikipedia.org/wiki/Martin_Luther_and_antisemitism#Warning_against_the_Jews
"(...) They are our public enemies. They do not stop blaspheming our Lord Christ, calling the Virgin Mary a whore, Christ, a bastard, and us changelings or meal calves. If they could kill us all, they would gladly do it. (...)"
And the concept of a Jewish conspiracy threatening Italian social order dates at least to Giordano Bruno:
http://davidduke.com/clio-gagged-how-jewish-supremacism-gags-history/
"(...) such a pestilential, leprous, and publicly dangerous race that they deserved to be rooted out and destroyed even before their birth. (...)"
And the concept of a Jewish conspiracy threatening French social order dates at least to François-Marie Arouet "Voltaire":
http://ebooks.adelaide.edu.au/v/voltaire/dictionary/chapter448.html
"(...) The little Jewish nation does not deserve to be considered politically, except on account of the prodigious revolution that has occurred in the world, of which it was the very obscure and unconscious cause. (...)"
And the concept of a Jewish conspiracy threatening English social order dates at least to Edward Gibbon:
http://en.wikipedia.org/wiki/Edward_Gibbon#Legacy
"(...) From the reign of Nero to that of Antoninus Pius, the Jews discovered a fierce impatience of the dominion of Rome, which repeatedly broke out in the most furious massacres and insurrections. Humanity is shocked at the recital of the horrid cruelties which they [the Jews] committed in the cities of Egypt, of Cyprus, and of Cyrene, where they dwelt in treacherous friendship with the unsuspecting natives; and we are tempted to applaud the severe retaliation which was exercised by the arms of legions against a race of fanatics, whose dire and credulous superstition seemed to render them the implacable enemies not only of the Roman government, but also of humankind. (...)"
And the concept of a Jewish conspiracy threatening Russian social order dates at least to Mikhail Alexandrovich Bakunin:
http://library.flawlesslogic.com/jtr_01.htm
"(...) one exploiting sect, one people of leeches, one single devouring parasite closely and intimately bound together not only across national boundaries, but also across all divergences of political opinion (...)"
And the concept of a Jewish conspiracy threatening American social order dates at least to Henry Ford:
http://www.jewishvirtuallibrary.org/jsource/anti-semitism/ford1.html
http://en.wikipedia.org/wiki/The_International_Jew
I could continue this further on - quoting Spanish, Romanian, Swedish, Belgian, Turkish, Arab, etc., etc., etc. concepts of a Jewish conspiracy.
So the conclusion is, that of course Poles were history's most famous anti-Semites ???
And that's why Poland ended up with the largest Jewish population on this planet ???
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PS:
Considering info quoted above, we must ban this as an anti-Semitic symbol (just like swastika):
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List of even more of well-known non-Polish people who were labelled as anti-Semites for their views throughout history:
http://dylewski.com.pl/menu-boczne/iluzja-pieniadza/osobliwosc-zydowska-czesc-1/
http://dylewski.com.pl/menu-boczne/iluzja-pieniadza/osobliwosc-zydowska-czesc-2/
Cicero (106-43 BC), Seneca (54 BC – 39 AD), Strabo (ca. 63 BC – ca. 24 AD), Quintilian (ca. 35 – ca. 96), Horace (65 BC - 8 AD), Juvenal (60-127), Geoffrey Chaucer (1343-1400), Erasmus of Rotterdam (1467-1536), William Shakespeare (1564-1616), Daniel Defoe (1660-1731), Denis Diderot (1713-1784), Paul Henry d’Holbach (1723-1789), Johann Gottfried Herder (1744-1803), Johann Wolfgang von Goethe (1749-1832), Georg Wilhelm Friedrich Hegel (1770-1831), Arthur Schopenhauer (1788-1860), Napoleon Bonaparte (1768-1821), William Makepeace Thackeray (1811-1863), Immanuel Kant (1724-1804), Charles Dickens (1812-1870), Alexander Sergeyevich Pushkin (1799-1837), Richard Wagner (1813-1883), Franz Liszt (1811-1886), Nikolai Gogol (1809-1852), Fyodor Dostoyevsky (1821-1881), Anton Czekhov (1860-1904), Ivan Turgenev (1818-1883), Leo Tolstoy (1828-1910), Pierre-Joseph Proudhon (1809-1865), Edgar Degas (1834-1917), Auguste Renoir (1841-1919), Karl Marx (1818-1883), Ernest Renan (1823-1892), Herbert George Wells (1866-1946), George Bernard Shaw (1856-1950), Theodore Dreiser (1871-1945), Thomas Alva Edison (1847-1931), Walt Disney (1901-1966), Gilbert Keith Chesterton (1874-1936), Walter Lippmann (1889-1974), Mikhail Bulgakov (1891-1940), Boris Pasternak (1890-1960), Aleksandr Solzhenitsyn (1918-2008), Thomas Stearns Eliot (1888-1965), gen. George Smith Patton (1885-1945), Charles de Gaulle (1890-1970), André Gide (1869-1951), Hannah Arendt (1906-1975), Arnold Joseph Toynbee (1889-1975), David Irving (193

, Mel Gibson (1956-), Werner Sombart (1863-1941), Johann Gottlieb Fichte (1762-1814), Johann von Höfen Dantiscus (1485-1548)
Even some Jewish people can also be added to this list of anti-Semites quoted above (yes, there were / are also anti-Semites among Jews).
So stop your rubbish propaganda about Poles being "special kind of anti-Semites".
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PS:
Yes - I was also very surprised that Hannah Arendt is listed there among other anti-Semites.
I tried to google something about this issue - and found this website:
"Troubling new revelations about Arendt and Heidegger":
http://blog.stewarthomesociety.org/...g-new-revelations-about-arendt-and-heidegger/