Quote from Anaconda:
The wellpaid useful idiots simply assume and follow the groupthink. Taxes on speculators = good is generally what they believe because that is what the public quickly believes.
The way I see it, the tax has two purposes:
1) Appeasement to the masses
2) Attack on the litle guy trader
If you see how much Goldman, Merrill, JPM, etc lobby and contribute aka pay of the government, you will know that they are definitely behind this as it will benefit them. There is no way this transaction tax would even get any media attention, let alone make headways in Congress if Wall Street did not like it.
That is generally how it works. The real questions is how many are useful idiots versus corrupt & pretending.
I'm also talking about the journalists who are pushing this. Most of them just follow & believe the line of thinking promoted onto them.
You are missing one important point. Most of the big brokers make much more on agency transations (ie charging commissions) than they do via market making. They are and have been against this tax along with the exchanges. Simply put you make more money charging commission than you do making markets. This tax will take away a significant revenue stream.
Their lobby is the reason this dreadful tax has been knocked down in the past. However, with the rising anti Wall Street sentement, and a very liberal Congress it is in the cards.