Rabbi Miller as quoted in “Rav Avigdor Miller – His Life And His Revolution” by Rabbi Yaakov Y. Hamburger (I don’t recall the page number):
I’ll tell you a story. In Vilna, Reb Yisrael Salanter once entered the big shul and there was a custom to say, ‘Hanosein teshuah lamelachim,’ a certain prayer for the king. When the shamash skipped it, Reb Yisrael went up to the bimah, took the siddur, and recited it out loud for the public to hear. He did it to let them know that it’s an obligation – we have to pray for the government.