And this movie will go a long way to illustrate this - but first, you have to lead the horse to water - THEN stick his nose in it.
It's better, in my mind, to let the sleeping dogs lie until you can get your forces educated, trained and ready to fight.
By showing this film, many who haven't yet understood what is really afoot - they will be jolted out of their complacency. They will "get it" - and they will accept it easier and better because it was not forced on them.
And the enemy(ies) will "reap the hurricane."