I'm genuinely curious what was said to Kim or what exactly happened for the complete 180 turn around and like @Ocoka said, how do a people that have been bombarded daily for multiple generations with pro-NK propaganda reconcile that the imperial devils aren't that bad?
There's an assumption that the people totally believe it. Remember there's a lot of communication *into* DPRK by NGOs, governments, even people using Chinese cellphone networks so there's something of a counter-balance. Not to mention word of mouth with trusted friends.