Why? If a private citizen sets up an "open mic" of sorts that anyone can use to espouse their viewpoints because they believe in "free speech", why is that "et

Why? If a private citizen sets up an "open mic" of sorts that anyone can use to espouse their viewpoints because they believe in "free speech", why is that "ethically problematic"? Facebook doesn't owe it to anyone, but then again, there's no good reason for them not to do it either.