Since the Roberts Court has now ruled that corporations have the same rights as people and overturned decades of laws regulating their speech, I'm wondering: Do they now have the right to arm themselves by employing Blackwater-type mercenaries and post them all over their office buildings?

Will Wal-Mart post armed guards in their parking lots?

Seems like a natural consequence. If corporations can enjoy full First Amendment protections, wouldn't they likewise get Second Amendment rights?