Mexican culture is not strange to americans. The United States is a country based off immigrants from different parts of the world, and while living in the US, that fact becomes a norm. It is not considered “exceptional” to meet a person from Mexican descent in the US, as they are the most integrated.
The picture I would take would represent a realistic truth of the Mexican-descent population. They are familiar with the system, with the country. We don’t usually find
Mexican tourists taking pictures at a moment, even if we do we do not assume they’re tourists at first sight. A picture of a mexican-descent family in a crowd at a park, admiring something they are seeing.