Internet was born free and without any blockings.
Lately, illegal and illicit content appears, different for different states.
Russia, which pretented to be European-like democracy implemented one of the most advanced blocking system, which looks completely legal.
How it was evolved, from protection of children to war time censorship, is it really effective, how step-by step eolved supporting legislation.
There are some legislative trends for content blockings in EU.
Which mistakes made Russian industry to allow what happend, what to look carefully in other countries.