How would YOU keep a confederate flag off your property?

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I am getting ready to rent my first property in Greenfield Indiana. You would think Greenfield is situated in the deep south. Yes, I went through a redneck phase where I dipped tobacco and wore cowboy boots, but eventually I got out of high school. 

I've read rental agreements that talk about keeping the property looking up to standards (ie no long grass, cars on cinder blocks, etc) but how would you keep somebody from flying a confederate flag? It seems like a silly thing to be concerned about, but trust me it's not around here. Less than a block away flies a rebel flag on a tall flagpole. I'm telling you the flag is on nearly every corner. I personally am not offended by it, and I'm a huge supporter of state's rights, but I want to make sure my properties are professional in appearance.