This is a great example of why I think the hallmark of American politics is hypocrisy. The right is all about corporations having a political voice until the left starts leveraging them to their causes. Conversely, the left considers corporate influence in politics to be evil until they start steering the influence their direction.
It will eventually reverse course and the sides will switch again.
Citizens United was correctly decided. It is still not a good idea. It's why Ive always said I'd support an amendment to the constitution to pare back the political influence of corporations.