putting flyers over "gun free zone" signs at school?

[FIVETWOSEVEN]

That would be low road. Leave immature stunts like that to the lefties.

Use a photo of the sign in a well written editorial for the campus and local newspaper articulating the ideas that inspired the would-be "prank". If it is published, it will get the attention it needs without furthering negative stereotypes for RTKBA proponents. If it isn't published, utilize whatever social media is prevalent in your area. $.02

This is the truth that is being posted, not something about "assault clips" that make everyone a target. Common sense is nice to have.