There are three quick and impactful videos that I like pointing people towards when they ask about how their personal data can be used against them. All are free on YouTube. Enjoy!
Data to Go
https://www.youtube.com/watch?v=_YRs28yBYuI
Amazing mind reader reveals his ‘gift’
https://www.youtube.com/watch?v=F7pYHN9iC9I
See how easily freaks can take over your life
https://www.youtube.com/watch?v=Rn4Rupla11M