How about those Palestine protestors having their citizenship revoked for expressing their opinion? Supporting Palestine is illegal in Europe too, of course, but they haven't revoked citizenships over it (yet).
No one has had their US citizenship revoked. Some legal permanent residents (not citizens) who have supported terrorist organizations such as Hamas might be deported depending on the outcomes of their court cases. I don't support those actions but let's be clear about what's actually happening.
Expressing their opinion? The protestors literally assaulted Jewish students. They illegally took over property. They prevented people from accessing the classes they pay for. This was an illegal riot and terroristic to any observer.
Also no one has their citizenship revoked. People who are immigrants but not yet citizens are getting booted for breaking the law in numerous ways, including supporting sanctioned terrorist groups. It goes well beyond legally protected speech, even for America.
Then I must have mixed up details from two different stories. But he's relevant anyway. Are permanent residents exempt from the first amendment, or is he being deported for something other than his speech?
Denaturalization means taking away someone's citizenship. Nobody's citizenship was taken away in this specific case.
I think most would agree that "taking away someone's permanent residency card" is not on the same level of outrageous as "taking away someone's citizenship." I agree that both are drastic measures, but one is way more outrageous.
Whether it was justified in this specific case or not, and to which degree, is an entirely separate story.
If you mixed it up with some other case and manage to locate it, please reply with a link, because I am genuinely curious too (not trying to be snarky, I mean it). So far, I was not able to find a single case of a US citizen getting denaturalized recently, except this one[0]. But this one kind of makes sense, since he lied on documents during the naturalization process about his involvement in extra-judicial killings in El Salvador back in the day (which would have almost definitely prevented him from becoming a US citizen, in the first place, if he was truthful):
> Arnoldo Antonio Vasquez, a native of El Salvador, is alleged to have concealed and misrepresented his involvement in the extra-judicial killing of 10 civilians in San Sebastian, El Salvador, in September 1988, when he was an officer in the Salvadoran military. Vasquez was previously identified by then-Vice President Dan Quayle in a list of Salvadoran soldiers responsible for these killings. Vasquez concealed his involvement in the San Sebastian killings throughout his immigration and naturalization proceedings. Vasquez was naturalized as a U.S. citizen Jan. 13, 2005.