I wouldn't worry about the person who tweeted ( a green party politician), I'd worry more about the Calgarian whose article she tweeted, which has choice lines like
"Alberta's sprawling cities suddenly rediscovered that mountain water moves downhill"
"Yet most Albertans still can't believe the scale of the multi-billion disaster that has dampened Calgary and environs because affluence tends to dull the senses."
http://thetyee.ca/Opinion/2013/06/24...ampaign=240613