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Jewbacca alludes to the refusal to kneel (not to be confused with bowing) to Haman in the Book of Esther. There's also a prohibition in Leviticus 26:1
Since it can be misinterpreted, I'll note that kneeling was acceptable during prayer when the Temple stood, also that observant Jews kneel, with a barrier like a mat, on Rosh Hashanah and Yom Kippur
And in a more secular way which I would think would apply to all religions, kneeling clearly implies acceptance of a belief system. Which may be in conformance with Judaism on many issues, but not on all, though the act suggests the acceptance of not only all, but an alternative belief system. I would think non Jews would feel much the same way, given the refusal to bow of some Christians.
Of course in the real world, 2020, this isn't about symbolic kneeling, it's about intimidation. Ramming a belief system in it's entirety down the throats of populace. It's a demonstration of power, not belief. We're back to Haman and his ilk.
That said in a non political, non religious context, there are times to kneel, times I've kneeled.
