On Oct16* it was two BiL articles that caused internet blockages even wider than just wikipedia.

Then later on Apr17* it was two terrorism articles that caused internet blockages and this was given as the official reason for blocking wikipedia.

https://www.haaretz.com/middle-east-news/turkey/revealed-the...

  Oct16*

https://en.wikipedia.org/wiki/Berat_Albayrak

https://en.wikipedia.org/wiki/RedHack

  Apr17*

https://en.wikipedia.org/wiki/State-sponsored_terrorism#Turk...

https://en.wikipedia.org/wiki/Foreign_involvement_in_the_Syr...