He wasn’t protesting ‘taxes’ per se. If he had been then his anger would have been directed at congress. His main gripe seems to be against the way the laws were administered towards him and how, as he claims, the ‘rich’ get treated differently by the IRS. He also complains about IRS incompetence in his various dealings. The MSM will try to spin this murderous nut as ‘anti tax’ but it appears from his ramblings that he wants a simpler though more progressive tax code.