I think that they should bring back the short "public information films" that they used to have between programmes.
There are so many things that my generation were made aware of:dangers of wild swimming, railway safety, including not ignoring the lights at level crossings, using fireworks safely, not crossing roads like a twat, cycle safety, how to behave around cattle or horses when out walking (and the importance of shutting farm gates), not going close to cliff edges etc.
I get particularly exercised by the cliff edges thing. I live in Sussex, and often walk along sections of the Seven Sisters. It's remarkable how many idiots ignore the warning signs and stand really close to the edge for photographs, or even sit on the edge with their legs dangling over. Every year, large amounts of those cliffs just fall off, they're really fragile. I don't even like walking along the beach close to the cliffs, because of the risk of a fucking great lump of chalk landing on me. These twats really are Darwin Award contenders.