OK, here's another one that probably doesn't speak to people abroad. It was a German crime series starting in the late 60ies and running till the mid 70ies. The interesting thing about it, it covered many social issues of the time without any taboos, such as abortion, which was still illegal till 1975, I believe. Or drug abuse without judging the users and presenting them as people needing help rather than punishment. It also featured and promoted many songs of the contemporary hitparade.
https://www.youtube.com/watch?v=-O4uQSZr82Y
https://www.youtube.com/watch?v=-O4uQSZr82Y