>>282050500
>>282050573
I have a good reference for this in an actual manga.
The oneshot "A Tale of Absolute and Utter Nonsense" from the 1970s was about a failed uprising against the government where anti-government group got together and started a Japanese Project Mayhem, including a main group committing suicide by cop by trying to storm the Japanese parliament and kill everyone inside.
What got the author in trouble was not the content of the one-shot, but that he ended it with a page depicting the back of the Emperor's head in a pose that came from a famous photograph. Originally, the panel was cut out when the one-shot was first published and only included in a much later re-release. The main reason was allegedly fear someone would have attacked the publisher's office over it.