Does your disagreement with something make that thing "fake"?
There is definitely a flood of truly "fake" news these days regardless of your political leanings. Yet, what makes something "fake"? Does disagreeing with the message make it fake?
NO.
So what makes it fake?
Reporting things as fact without evidence. Treating opinion as fact, without supporting evidence.
Treating logical fallacies such as appeal to authority, appeal to popularity, and appeal to tradition as though they prove something. They don't. They work well against people who haven't trained themselves to notice these fallacies. This means they work well against most of the population. That doesn't make it factual.
Another very popular logical fallacy these days is called the appeal to stone. This is the act of calling or implying something is ABSURD, or a NOTHING BURGER without any actual evidence to back this point of view other than opinion.
The Hypocrisy
If you would consider something factual if it is applied to someone you dislike, that doesn't make it any less factual when applied to someone you like.
If news and evidence against someone you view as an enemy is something you would consider credible when applied against them, then guess what? If that same news and evidence can be applied to someone you support or like it is still CREDIBLE.
Fake news can be hidden in the hypocrisy of damning someone for something UNLESS you like the person doing it.
If it is a crime, if there is evidence, then the fact is it doesn't matter whether it is enemy or friend. The evidence is the truth. The hypocrisy is in believing some people are above the law and others are not. The hypocrisy is in immediately dismissing any claim because you support someone, and latching onto any claim because you dislike someone.
Now just for clarification. Truth is subjective. Facts are not. The truth is your view of something based upon everything you know, and have perceived. At least that is the TRUTH within you. The rest of us call that an opinion. Most people when they state an opinion are stating the TRUTH as they know it.
A lie is when you don't believe what you are saying, but you say it anyway. So, a lot of the people being called liars, or things stated as being lies are NOT actually either of those things. The person has to be knowingly speaking against what they perceive as the truth for it to be a lie.
A person speaking from ignorance or naivete can be WRONG, but they are not lying.
We all do this. We can only work with what each of us know. We can hopefully learn more. If we don't think we are infallible at least. Thinking we already know everything shuts the door on learning.
What about facts. Facts are the objective things. "The window is broken" If you can look at the window and see it is broken then that is factual. The truth is what someone will try to tell you when you say "Why was the window broken?".
You'll state the motivation if you were the one who broke it, or you'll speculate/guess as to the motivation of the person that broke it. Your speculations could be wrong.
Does that mean it is fake?
No.
So what is "fake news"?
Perhaps intentionally editing things and presenting them out of context?
Perhaps saying someone said something, that they didn't?
Perhaps taking accusations as FACT and CASE OVER without treating a person as "innocent until PROVEN guilty?"
One thing that is fact.
If you disagree with something someone says, even if you REALLY don't like it, that doesn't mean it is fake.