It’s one thing to have a wide-open policy in which people can post whatever they want on Twitter, allowing for some to post lies and calls for violence while other users get to push back against them and fact check. I, for one, believe there is value in seeing the unfettered thoughts of a madman denying the Holocaust while calling for another one — especially one who Democrats portray as somebody worth cutting a deal with and deserving of sanctions relief.

But once Twitter crosses over into the realm of saying it is going to slap a warning label on Trump, there’s no way it’s defensible to allow Khamenei to call for terrorism and mass extermination of Jews without any filter.