Operation Linebacker anti-graffiti campaign
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/30682960@N08">AC Transit</a> from Oakland, CA, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/rideact/21281318896/">Flickr</a>