You realize that a corporation is an idea written into Law. Do you have a tendency to claim that corporations do harm, and that “they” fail to pay enough taxes? Is what you are truly expressing outrage about the actions of _____, Inc’s officers and shareholders?
You have anthropomorphised corporations as if they were anything but a concept writ large. Notwithstanding you somehow feel indignant about the decision in Citizens United v. Federal Election Commission. By that seemingly notorious majority decision the Supreme Court decided that people do in fact have the right to free speech through money spent on such.
Your qualm is with the actions of individuals, not with “corporations.”