I had forgotten all about this graph from Robert Putnam's Bowling Alone:
For the autoethnographic record, TV is definitely not my primary form of entertainment, and I have never given anyone the finger while driving. Indeed, with some certainty, I will assert that it has never even occurred to me to give someone else the finger while driving. I have shouted unkind things at motorists who do not seem to understand the rules of crosswalks, a common malady here in Cambridge.
Meanwhile, my participation record is community projects leaves much to be desired.