Ah the "horsetail", a plant that survived the extinction of the dinosaurs...
Even a small fragment of it can grow into a new plant, it spreads both via rhizomes and spores, and it'll punch through any barrier eventually too.
Given the revolutionary flavour of the university of Amsterdamn's history, it might well fit.
@HexesofVexes Last year students were blocking that very bridge to protest the university's response to Israel's violence in Palestine. They should have know that they were being accompanied by this paleo-force of resistance.
Huh, neat!
The University of Amsterdam will always have a special place in my heart - it's where Brouwer began his revolution in mathematics. Though, I believe his student's student (the late Professor Troelstra) was more fond of hunting for species of bramble around Amsterdam than horses tails!
Talking about perseverance!