If freedom of speech is absolute, how come it's not applied for private spaces and for the Internet?

And much, much more.

Insider trading

Threats of violence

Is it normal to hate my dog, but feel too guilty to get rid of him?

That’s what it is. You have no right to use other people’s stuff. If people let you use their stuff, they can tell you how you can use it, and they can tell you to stop using it any time they want.

Conspiracy

HIPAA violations

Why are people outraged over Latina actress, Rachel Zegler, being cast to play Snow White in the live action remake of Disney’s Snow White and the Seven Dwarfs?

Insurrection

Perjury

You have freedom to travel. If I loan you my car, I can tell you not to take it out of town, because it’s mine, you have no right to use it, and if I give you permission to use it I can tell you what you can and can’t do with it.

What causes tension between liberals and conservatives? Is it purely based on ideological differences or are there other factors at play?

You have freedom of speech. If I loan you my computer, I can tell you not to use it for certain things, because it’s mine, you have no right to use it, and if I give you permission to use it I can tell you what you can and can’t do with it.

Freedom of speech does not apply to:

Revenge porn

7 Yogurts That May Wreck Your Body - Eat This Not That

False advertising

Child pornography

Fraud

Is there a type of function where every point has exactly one tangent line passing through it? If yes, what is this type of function called?

Revealing classified information

Terroristic threats

No freedom is absolute.

Eastern District of Virginia | U.S. Government seizes approximately 145 criminal marketplace domains - Department of Justice (.gov)

Trade secrets

If you’re wondering why free speech doesn’t apply to the internet, it’s because you have no right to use other people’s stuff for free.