movies and video games showing some basic methods could teach humans and thereby decrease misunderstandings

when humans watch war movies, humans learn it's a good idea to get behind cover when somebody is shooting in their direction

and

when humans play war video games, humans learn it's a good idea to get behind cover when somebody is shooting in their direction 

this does not mean that movies and video games divulge any secrets, 

it just means movies shows some basic methods of how to survive 

regarding intelligence and security, there would be some stuff that if shown in movies and video games, could teach humans some basics and thereby decrease misunderstandings