Can you commit a transgression to prevent someone else from committing a greater transgression? Should I commit a minor violation of Shabbat to prevent someone else from committing an even graver violation? Should rabbis authorize conversions that make them uncomfortable to avoid intermarriages? What is the line between religious concern for others and compromising one’s own religious integrity? When does the system lower its sights to deal with the reality of non-observance and when does it hold firm?