You could start by setting an example of something meaningful.
Yes, this open up an interseting question I ask myself from time to time: Do I post here simply for my own entertainment? Or do I use the forum (as I presume it is intended) as a means to share for the benefit of all readers? I have zero inctention to allow my peers, be they in Canada, or elsewhere, to see me as a childish combative person - I honestly have better things to do, and planes to fly.
If I can help, I'l try, if I can mentor, I will, if I have to hang my head in embarrassment as to the postings of my countrymen, oh well, that too, will pass....
In the mean time, I'll always try to set an example - a proud one. What we done in aviation in Canada is amazing. What we have accomplished over the decades, and still export to the rest of the world, in terms of fine products, and well trained pilots is a record to be proud of. So I'll be proud of it, and resist the need to be petty.
We can do better Canadians!