I removed mine just two days ago ... but my car does NOT have tint. The reason I did is because my flag's stripes started turning orange. (I had two, small flags printed from the computer and discreetly taped inside on both lower sides of the rear window.) This fading, especially with a comparison offered by my T-red Contour, really wasn't looking too well.
Before anyone jumps at me: When I have more time I'd like to print another small one and put it up on one side - to replace those two.
Until then, the patriotism remains in my heart and in my actions... not on my car.