Bill C-51 is a lowering of standards for what can be considered terrorism in Canada. It extends the power to our domestic security agency to arrest people who "may" commit terrorism rather than "will"--what that means is a open question. It also establishes more powers to quell "terrorist propaganda", including the cited website takedown powers.
It's much broader than that, "(f) interference with critical infrastructure;" which can be interpreted to mean First Nations protests that delay pipeline construction. I heard from a representative of the BC Civil Liberties Association that protestors have already been placed on no-fly lists.
It could also easily be interpreted to cover that kid accused of making too many connections to the Canadian tax agency's servers back when the heartbleed vulnerability was new.
Computer monkeying could suddenly be tarred as terrorism, in addition to criminal nonsense; it was already hyperbole - I don't even know where to begin on C-51.
