Rearviews are all dimmable. Even if you don't have the button, change the pitch of your rear view slightly vertical and you'll get a dimming action. Sideview mirrors are self explanatory, just turn them out or in if it's an issue. My main thing was not risking getting in trouble to be polite when the individual you're being polite to assumes no risk or responsibility should you get in trouble. It's not being conceded or ignorant to look out for yourself first. Nobody will care about you more than you care about your own actions. Be safe, be kind, but also calculate.

No. Dim your mirror. Principle is principle. If you turn your lights off, you run the risk of forgetting. Do you suppose the person you took the time to be kind to cares about the ticket you may get because of your kindness? Just dim your mirror, saves everyone the hassle. Don't ruin your own day by batching about some headlights or some comment someone made on the internet. Just move along.