The authors of Anyone can become a Troll took the mayoral perspective, when they should have taken the people's.

Trolling has several parallels with graffiti in the 80's. Both are/were:

1. art by non-elites
2. treated as ASBOs
3. under-appreciated by contemporaries

While at times arrant; of this century's two dominant new art-forms, it'll be a cold day in Hell before I prefer selfies to trolling.