'Star Wars' star Mark Hamill says he quit Facebook over its stance on political ads — but he's still posting to Instagram, which Facebook owns (FB)

· "Star Wars" actor Mark Hamill announced on Sunday that he was quitting Facebook in protest of the company's handling of political ads. 
· There's only one problem: Hamill has been posting frequently since then to Instagram, which Facebook owns. 
· The company's stance on fact-checking political ads — specifically, that...