Milwaukee artist Jeremy Novy's koi fish paintings were repeatedly defaced with graffiti, including the anti-gay slur "F*g."
The couple says the city violated their First Amendment rights by fining them for painting their fence in rainbow Pride colors.
The Dallas Landmark Commission unanimously approved the display as a temporary art installation, allowing it to remain for up to three years.
As cities nationwide move to erase street murals, Milwaukee has installed two new rainbow crosswalks in defiance.
Transportation Secretary calls rainbow crosswalks an unsafe “distraction” and urges governors to remove them as part of a new federal safety initiative.