Found in a restaurant window downtown, the flag of the City of St. Louis with its fleur-de-lys turned into a peace sign. The actual flag looks like this:
It represents the confluence of the Missouri and the Mississippi, our French founders and Spanish rule of the territory before that. (There's a bit of a story behind it.) But with the vibrations of Ferguson still stirring the area, the way it's affecting people and the impact it has had on the region's business, peace would be welcome.