This article hits on a pet peeve of mine---people who allow themselves to be intimidated by the left. Steve Martin could have only been "made" to delete his tweet if he was willing to give in to the badgering, and clearly he was.
"It was, in large part, because many Americans have had enough of being badgered by social justice warriors bent on transforming the nation into a liberal dystopia full of people walking on eggshells, afraid to speak for fear of offending someone."
Good Lord, when are people going to grow a spine? It's way past time to learn that we need to get so aggressive with our response to such crap that they think twice about trying it again.