The analogy doesn’t hold here. Ukraine shouldn’t persecute it’s Russian minority. (Hell, it’s Russian-speaking cities are lobbing Molotov cocktails at the invaders.)
And Palestine isn’t mounting an invasion of Israel, though if they had the capability, it’s uncertain they wouldn’t—the Arab nations tried twice.
This is totally false.
Ukranian is Ukraine's official language. But Russian was allowed in "courts, schools and other government institutions in areas of Ukraine where the national minorities exceed 10% of the population" when Crimea was invaded [1]. That law was repealed, of course. But Russian was never banned.
Most recently, Ukranian was given primacy in "media, education and business." But again, not even talk of banning Russian in any meaningful sense.
[1] https://en.wikipedia.org/wiki/Language_policy_in_Ukraine