AMC Theatres, which is America's largest movie theater chain, has announced a new 'social distancing' initiative that will see the chain cut its theater capacity in half beginning on March 14, and continuing through April 30. Regal Cinemas has just enacted the same measure, as has Canadian exhibitor Cineplex, which operates nearly 1,700 auditoriums up north. Meanwhile, Alamo Drafthouse is similarly "deactivating" sections of seats. Expect other theater chains to follow suit in the coming hours. This is a necessary measure that will keep people from being stacked on top of each other, should they choose to go …