One of the first things I learned in #dafyomi was the source for praying for the government. It seems particularly relevant today.
דבר אחר מה דגים שבים כל הגדול מחבירו בולע את חבירו אף בני אדם אלמלא מוראה של מלכות כל הגדול מחבירו בולע את חבירו והיינו דתנן רבי חנינא סגן הכהנים אומר הוי מתפלל בשלומה של מלכות שאלמלא מוראה של מלכות איש את רעהו חיים בלעו
Alternatively, just as in the case of fish of the sea, any fish that is bigger than another swallows the other, so too in the case of people, were it not for the fear of the ruling government, anyone who is bigger than another would swallow the other. And this is as we learned in a mishna (Avot 3:2) that Rabbi Ḥanina, the deputy High Priest, says: One should pray for the continued welfare of the government, as were it not for the fear of the government, every man would swallow his neighbor alive.
Avoda Zara 4a