Apparently popping up around Los Angeles.
A less enthusiastic article on the same topic nevertheless provides a clearer image:
Posters that equate Obama with socialism are hardly new (just do a Google image search on “obama” and “socialism”); they’ve been around since long before he was the Dem nominee. And given his associates and his history, they’re hardly an unlikely concept. But to see them sprouting up in LA of all places could be telling.