Who is locked up for criticizing the government in Germany? You can be fined for insulting a government official, and I think it's a bad law and should be retracted, but a) insulting is not the same as criticizing and b) I've never heard of a single person locked up because of it - you'd basically need to deliberately refuse paying the fine for that

188 Criminal Code Insult, defamation and slander directed against persons in political life[1]:

(1) If an insult (§ 185) is committed against a person involved in the political life of the people, either publicly, at a meeting or by disseminating content (§ 11 (3)), for reasons related to the position of the offended person in public life, and if the act is likely to significantly impede their public activities, the penalty shall be imprisonment for up to three years or a fine. The political life of the people extends to the local level.

(2) Under the same conditions, defamation (§ 186) shall be punished with imprisonment from three months to five years, and slander (§ 187) with imprisonment from six months to five years.

This law is commonly criticized by free speech activists in Germany, as well as liberal parties like Die Linke and FDP. It was updated to be even harsher by our last government. David Bendels received a sentence of 7 months for posting an edited insulting picture of Nancy Faeser, Germany's last minister for interior affairs. The case sparked an international outcry and got a lot of press coverage [2]. Note that ironically the doctored image showed Faeser holding a sign with the message "I hate freedom of speech".

[1]: https://www.gesetze-im-internet.de/stgb/__188.html [2]: https://www.thetimes.com/world/europe/article/germany-insult...

Yanis Varoufakis, I think? Except he was banned from Germany, not locked up. If he tries to enter, then he might be locked up. They used the intermediate step of calling him a terrorist.