On Wed, 10 Oct 2018 07:55:28 -0700 (PDT),
wrote:

A large percentage of people I ride with are now using GoPro cameras
which appear to be taillights. They have a flashing red light around
the camera. The battery life is pretty poor because they run them all
of the time and sometime forget to recharge them when they aren't
riding.

You might want to find better riding companions.

Several people in the group have young children that ride and so they
have been routinely turning in people who do not give sufficient room.
They have also gotten a court ruling that photographic evidence is
admissible.

Ah, the cult of grievance and righteousness endures! It is the thing
that unites the right and the left, even if they don't know it.