For those of us in the United States: This is why American conservatives need to remember the importance of the First Amendment. Liberals can be very annoying, and their attacks on conservatives in office can be disruptive and even dangerous, but it is absolutely essential that citizens have the right to criticize their government. That means we need to defend the right of anyone, even liberals, to spout nonsense and make idiotic attacks via the public press.
The John Peter Zenger case in colonial New York, via jury nullification, established the principle that truth is an absolute defense against libel. Subsequent case law worked out the implications of that principle, including that opinion cannot be prosecuted because it can't be proved true or false. Therefore, attacks on people, even when very strongly worded, cannot be prosecuted if they are statements of opinion.
Liberals are wrong on a lot of things, but defending freedom of speech and of the press is not being “liberal” — it is being faithful to the clear original intent and written words of the Constitution.
Let's never forget that.
Libel still can be successfully prosecuted in America if “actual malice” can be shown and the account is untrue. It is not impossible.