Answer:
Without it, people could not share ideas freely on the internet without risking arrest.
Step-by-step explanation:
Yeah the answer above me is not correct, you're not able to say something that would threaten public safety, that's like someone on a plane screaming "I HAVE A BOMB!" yeah wouldn't end well for you. The first amendment states that "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press" to summarize you have freedom of speech and religion but you wouldn't be able to threaten the president and get away with it.