Without citizens united, a newspaper couldn't run an advertisement or an editorial about an biography of an active politician without running afoul of campaign

Without citizens united, a newspaper couldn't run an advertisement or an editorial about an biography of an active politician without running afoul of campaign finance laws- promoting a book that describes someone in positive light is clearly a contribution in kind, when column space in the paper costs money. There's way more nuance that went into the decision than the "corporations are people" meme.