Kirsten Powers gets it. There is an assault on free speech in this country that is coming from the political left. But the people responsible for it are not liberals. They aren’t worthy of the title of liberal, which presupposes a degree of tolerance for opposing opinions. They are illiberal leftists and they are crushing the free exchange of ideas in this country. To make matters worse, they know exactly what they are doing and why they are doing it. In other words, they are not ignorant of, or merely indifferent to, constitutional principles. They are at war with them....