You said "A tax isn't going to change our behavior. It's just going to make the poor more poor and the middle class will just purchase less".
Since we have not seen what Manitoba's plan is yet, stating that it will make the poor poorer is just speculation and a scare tactic. BC returns the tax through tax breaks, Alberta has a website where you can see what it will cost you based on your habits and income.
https://www.google.ca/url?sa=t&source=web&rct=j&url=/amp/www.cbc.ca/amp/1.3900339&ved=0ahUKEwi9rqfw17DRAhXq5YMKHYbzDJEQFghdMAk&usg=AFQjCNFQNnriHosj_N1y8QH771j8I1G2gA&sig2=lmqBLg7-F5IsWBAFAdBfTQ
"The middle class will just purchase less",,,,,ahhh, yeah, that's the point?!? That is exactly the reason for the tax. Value products at their true cost so that people think about their purchases before making them. It will stop us from being as wasteful since if you have to pay more for that 55" TV when their is nothing wrong with the 48". Maybe the 7 passenger Expedition is a bit too much for your family of 4 when you only haul a bunch of kids 3 times a year. Maybe the lifted 4x4 as a second vehicle isn't the wisest choice for the 2 block run to get eggs.
Shift manufacturing back to Canada where we can control co2 output? Great idea....a little Utopian don't you think? My household earns a very good middle class income and based on Alberta's system it would cost me about $500 per year. How much more will items cost if made in Canada? T-shirts, socks, toys, runners, etc.....all these things are cheap because WE insist on the manufacturer making them cheap. As a result you get extremely low wages and horrendous environmental regulations in other countries because they don't have to do any better....and we kept buying. You think Canadians are going to work for a few dollars a day? Are you going to accept paying exponentially higher prices for goods because the cost of manufacturing them has doubled, tripled....?
There is a reason why goods are cheap and there is a reason why 3rd world countries don't have as strict environmental regulations....because we, the ultimate consumer don't demand it.
I don't know if a carbon tax will work but we certainly need to start paying for the true cost of things and stop being so wasteful. This tax is an attempt to move us in the right direction and I support it. It's about damned time!
Marpet