In contrast to the tendency of the rabbinic tradition to gloss over the revolt, early Zionists eagerly seized on the story as proof that Jews, when faced with persecution, were capable of fighting for their dignity and self-respect.The article does also bring in a Passover connection that isn't too far fetched.
For many, many past posts on Shimon Bar Kokhba and the Bar Kokhba Revolt of 132-135 CE, start here and follow the links. A few more recent posts with related content are here, here, and here. For a famous story about archaeologist Yigael Yadin, Bar Kokhba, and the President of Israel, see here and here.
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