Interesting point about the PSAs...if you read them individually, they are quaint little tips on how young people should behave. However, if you read some of the social commentary PSA consecutively, there is definitely a pattern of thought that leans a bit to the left.
Here is a great list of all DC PSAs:
http://www.dcindexes.com/psa/index.php
On a positive note, if it was not for Schiff's lawsuit with Jack Kirby over some contractual obligations for the syndicated comic strip SKY MASTERS, Jack may not have left DC to join Marvel. Thats something to think about!