Our resources are finites. We need to choose collectively what to renounce of.
A simple thing to reduce the energy use of a superfluous sector : remove all the screens used for advertising.

And then stop all advertising completely.
Some municipalities will be afraid of taxes/revenue loss. But I'd argue that they displace the cost unevenly today : the ad companies makes profits that are not needed if we only have to cover the maintenance cost (e.g. bus stops) and equitably spread it.