They proved something very important. Humans don't need "rulers" to survive. We can govern ourselves and do just fine – and often much better – than when we allow corrupt people to have power over us.
The town of Cheran has let the entire country know that political proselytizing is not welcome within their borders. Cheran is located in the state of Michoacán, an incredibly violent area in central-western Mexico.
Checkpoints at the border of Cheran are manned not by police or military, but by local people who are protecting their little town. They haven't had a murder or violent crime in Cheran since 2011 when they kicked out politics for good.