Is there a halachic basis for those who loudly protest Chillul Shabbat publicly? I heard there are those who justify themselves by saying the Shulchan Aruch clearly states שצריך למחות when there is חילול שבת בפרהסיא.
Firstly, can anyone help me locate this source?
Secondly, if such a Halacha exists, what are the parameters of this Halacha? To what degree must people go out of their way to demonstrate and protest?
Thirdly, at what point does the מחאה- protest become a Chilul Hashem?