>>Aeolun+(OP)
It's not. "The people" is a collective term, so this unambiguously says that collectively the people have the right to keep and bear arms, i.e. as a group. For example, maybe this guarantees that a well regulated militia of the people has the right keep and bear arms. An example of a less ambiguous statement would be: "the right of all individual people to keep and bear arms".