What is the significance of the First Amendment with speech and press?

The first amendment is a wonderful thing that helps the people, (represented by the media and their own voices) control government and speak their mind about certain issues. It lets people get across what they want to say and how they feel, however congress has passed laws about this to limit our freedom of expression to an extent. The people have limited freedom of expression, because obviously if someone was going to say they would kill the president we would have some issues. People can’t just say literally anything that comes to their mind. Their arguments or opinions must be well thought out and just, not completely unfair or a threat to someone else. There is a difference between being against the war and maybe doing a slient/ non-violent protest and doing a full out violent and rowdy, also annoying, protest that the law has to end. People are allowed to say what they want to say, they just can’t libel, slander or take private action against another.