Let's punch it up to people with 10 million or more (which is more in line with what "millionaire" meant in the days of our parents and grandparents) and see how many first-generation are left. Obviously, that data is hard to come by (and frankly, I'm skeptical of the Cato data, just as I'm not citing data here from Citizens for a Fair Economy).
0. http://economix.blogs.nytimes.com/2012/01/17/measuring-the-t...
Googling turns up lots of people quoting that statistic, but none of them provide more details on who was surveyed or what methodology was used, so it's kind of meaningless.
http://www.ustrust.com/publish/content/application/pdf/GWMOL...
Yes, and this is a problem. We tax people who have $1M net worth far too much, and people who have $10M+ net worths (the true 1%) far too little.
Edit: Clarified that I meant to refer to net worth, which is far more useful to talk about.
1% makes a great campaign slogan, but is similarly picked from the air. If one wanted to find 'the number' related to the Bourgeoisie - it would be near 0.05%.
My point is, when people talk about taxing the rich, they are talking about most of the folks on HN (at least in SF). The top 1% households make ~$450k per year. That a couple who each take home $225k.
I remember an election in Canada a while back where the NDP (far left) said "We would increase the taxes on thr rich". Someone asked "who are the rich?" And they said "A family of four making more than $80K." I had to give them credit for being honest.
Even at $80k, you're doing nearly 3 times as well as the median American household.