The 5/80 Rule
We call the 5/80 rule a “systemic rule of thumb”. 5% is a good benchmark for many kinds of human behavior and explains much of the distorted information we are fed by mainstream media. They look for drama and eyeballs, since that’s their profit center, not actual news. So we start to believe that the worst 5% of any group represents the whole group, and are forced to take sides in this false polarization.