The Constitution protects people. That's the exact word that is used in the 14th amendment.
Corporations are NOT people. They have certain rights based on previous decisions (such as the right to due process if sued) but never never have they been given ALL of the rights in the Constitution.
That's what makes this decision judicial activism. It goes against the intent of the framers (who certainly did NOT make corporations "people"). It goes against 100 years of law made by the people. And it replaces the will of the people with 5 justices' opinion.
Corporations are not people. They can't vote. They can't run for office. And many of them are not even American.
Here, how's this: If the court were to decide tomorrow that the "people" in the 14th amendment included gays, how would you feel? They would be making that decision despite the will of the people obviously, as passed by legislation. Would you think that would be judicial activism?
"God Bless Our Troops in Harms Way."