https://en.wikipedia.org/wiki/Borki_train_disaster#Investigation
In the preceding years, [Sergei] Witte had been regularly involved in managing imperial train journeys across his railroad and was well known to the tsar. Two months before the crash, Alexander, upset about Witte's insistence on reducing train speed limits, had publicly chastised him and his railway, referring to its owners' ethnicity:
Nowhere else has my speed been reduced; your railroad is an impossible one because it is a Jewish road.
According to Witte, he had warned the government earlier of the deficiencies in train setup, notably using paired steam engines and faulty saloon cars.
the raving imperialists who ran the anglo newspaper empire (the magnate behind the Daily Mail and Daily Mirror basically bought all English newspapers --- also thought he was Napoleon reincarnated and looked like the lovechild of churchill and hitler) when drumming up support for WWI called anti-war and neutrality efforts something like "a dirty German-Jewish plot of international finance to bully us into neutrality".
Then a decade and a half later they published as genuine the Protocols of the Elders of Zion forgery.
European racism is a fascinating thing.
Okhrana even published a test balloon earlier in Russian part of Poland, accusing Jews of plot to exterminate Slavs in the Wisła valley by... building sewers in Warsaw. It did increased antisemitism locally so then they worked on Protocols. Though the sewers were build because it was nearly 700000 city with no sewers whatsoever.