Charlottesville Mayor Mike Signer checks his phone while waiting to speak with a television network on Aug. 18, 2017. These days Signer travels the country presenting his city’s experience as a cautionary tale.

Charlottesville Mayor Mike Signer checks his phone while waiting to speak with a television network on Aug. 18, 2017. These days Signer travels the country presenting his city’s experience as a cautionary tale.