We would not call it theft because their is no country thay they don't pay tax it's a means of generating revenue and the government needs it to run the affairs of of the country and the government makes good money from taxes, this something that everyone is aware of that the government must tax so it's not somthing to even argue about, just that the reason for taxation is for making the life's of their people okay, they are now doing it to enrich them selfs, and people are facing more challenges because the tax was supposed to be paid and made everything easy. And that is one of the reasons that people think tax is theft because they are not even doing the right thing with the money.
A lot of people are disappointed in the government because of the nature of mismanagement of funds and they even spend money on things that are not important and claim they spend a huge amount of money deceiving their selfs thinking they are deceiving people because people are watching them and the moment people will get tired that is when people will take action on the government.
It is true that the taxes generated are of course to be used to run the government system and also public services and if the government cannot use the results of taxes properly and they also do not think about the interests of the people of course this will make the public lose trust in the government so that it is not uncommon for us to see some people will avoid paying taxes because they will feel disadvantaged by the actions of the government who only think about themselves. If most people are very fed up with what the government is doing, of course they can take actions that could be detrimental to society and also the government and this certainly cannot be avoided because the public is very fed up with the management of tax funds by the government.