I think it is highly doubtful that changing the capital gains tax will hit the middle class at all as the middle class in Canada does not have enough money to put into taxable accounts.  Given our high tax rates, plus RRSPs and TSFAs you have to earn quite a bit of money to have anything left after paying close to 50% in taxes plus maxing out your RRSP, maxing out your TFSA, plus RESP contributions (if you have kids).   

And Larry - do some fact checking.  Life expectancy at birth for Canadians born in 2012 was 80 for males and 84 for females.  That is a lot different that 100 as splitting the difference for 82 and assuming a retirement of 65 it means 17 years of savings required vs 35+ if the average person lived to 100.