7th grade is completely reasonable to start opening their eyes to how the real world works - i.e. pretty much every person/company/entity you encounter is trying to manipulate you according to their own agenda. I wonder how we can balance the sense of wonder and optimism of youth with the hard lessons they need to know as they sally forth in the world.
A very good point you make - it's hard to walk the line with regards to keeping it real but not crushing students. For example, teaching climate change can be challenging.