A pet peeve of mine, when groups find a correlation and then assume causation. I wouldn't care but then they always want to pass a law that keeps people (sometimes me) from doing what I want to do. Even when it doesn't keep me from doing what I want, it often imposes a societal cost which is never included in the calculations of those pushing for such laws.
As a libertarian I find that anathema.
Here's a correlation I stumbled across recently which I thought you might enjoy.
Yes, that's right. Turns out there is a strong correlation between people drowning in swimming pools and Nick Cage starring in movies.
There oughta be a law.
For more correlation fun you can go to Spurious Correlations.