A lot of people think the same thing with respect to the first amendment. If you ask them what the first amendment is they will probably say: "freedom of speech" or "right to free speech". They think the first amendment gives us the right to free speech. Again, we don't get our rights from the constitution/government. The framers were pretty smart. They knew governments will always try to overreach so the constitution was setup to protect us from the government. What does the first amendment say?:

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; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.

Again, it's a protection of our natural right to free speech. It says congress can pass no laws which abridge that natural right. Just like the second amendment is a protection, saying the government must not infringe on our right to bear arms.