We'd get stories going around school when I was a kid, that the neighbouring school were going to come over and kick our heads in.
When your personal safety is in danger, you take notice.
We waited for the attack. It never came. Who started the rumour, what was their proof? Did we change timeline? 
Each successive 'threat' was treated with more skepticism.
My tip would be to treat any story that threatens your safety
in an exotic way with similar skepticism.
Other than that, the 911 loosechange video is pretty good, and Alex Jones' video of the Bohemian Grove Owl is just sooooo out there that it would quieten any naysayers when they see what the people who control the world get up to on their weekends off.
On a personal note, I believe that the world you live in is the world you create for yourself. So be wary of populating it with beliefs that are fearful. No one knows which day will be his last, and no one lives for ever. The end is coming for us all, one day. Often the scare stories are just a projection of an inner fear of death.
Also, you don't need your husband to believe for it still to be true for you.
K