The Dangerous Stranger (1949)- Teaching kids to be fearful of the world
Girls Beware (1951)- Teaching girls not to get into compromising situations. Nowadays feminists call this victim blaming.
The Bottle and the Throttle (1961). Film on drinking and driving. Fun fact one beer can cause you to drive out of control.
Marijuana and Heroin- The Terrible Truth (1961). The "gateway drug" myth is older than you think. Slurping on a J, will cause you to shoot up.
Live and Learn (1951). The first in a long line of trying to scare kids into being safe... without much success.
Gossip (1953). Look at the damage you girls can do with your incessant chattering!