According to Heavy Trash, many things. Specifically:
The problem is, gated communities do not increase people's trust in each other or the overall quality of life. They may in fact do harm to both.
To combat this spirit of distrust in our local communities, the arts organization erected bright orange viewing platforms at three key locations throughout the city. We're sure the gated communities are working quickly to get them removed but, for now, you can climb the stations at the following locations:
1. 3rd Street and Burnside Avenue, at Park La Brea 2. West Sunset Boulevard and North Gunston Drive at Brentwood Circle
3. Los Feliz Boulevard and Cummings Drive at Laughlin Park
found via World Changing.