I suppose it would depend on the country. In France, the poorest people pay no tax, which is very advantageous. And I think introducing a tax of 7% or 10% would just end up generating a revolt, something I don't want to see. And yet, I get the impression that we're pretty close to it, listening to everything that's going on in my country.
The people most affected by taxes are the middle class. At the end of the day, the lower middle class has a harder time getting by at the end of the month than the poorest.