When I used to paste protest posters on the walls and windows of companies in the US, to oppose, for example, their support for Israel; i used to use Epoxy instead of regular glue. They would have to use a sandblaster to remove it. This inflicts added costs and increases the disruption caused by the messages, along with the impact of the messages themselves.
I would go alone or with one or two brothers, at night; ride by the site on a bicycle, and spray the Epoxy as I rode past, then I would circle around again and paste the posters on the patches of Epoxy.