Tides is a leftwing organization of career activists and professional protesters paid to oppose and postpone Canadian resource projects.  The Globe will tread very carefully because "it's 2017" and investigating too deep (for example into Gregor Robertson and Vision Vancouver's financial backing from the same organization) doesn't fall into their "progressive" narrative. The Globe writes it's virtually impossible to prove except for the fact that Tides and Green Peace bragged about their influence in the 2015 election in their annual report - they are shameless.