I agree with what Spleen Cringe says above: "our" can mean "belonging to us all" [including the person/people being addressed], and I would assume that's most likely what was meant in this instance, just as if they'd said "our National Anthem" or "our climate".

Sometimes it's a pity that English doesn't have two different words for "our" - one for "me and you" and one for "me and another person/people". But since it doesn't, it's wise to consider the options as to which one was meant.

Marje