The upside-down American flag is a dead giveaway this was done by a lefty.

(OC Register) — Residents ran out with American flags, celebratory gunshots were heard throughout the county and local Marines began texting each other with the news that began spreading late Sunday night: Osama bin Laden is dead.

However, in Westminster, a seemingly pro-bin Laden 50-foot long graffiti was painted along the I-405 that said: “Osama Forever.” An upside down American flag was drawn with black spray paint in the middle of the message, and Caltrans crews were called out quickly to remove it.

California Highway Patrol officer Denise Quesada said several commuters reported the graffiti.

HT: anonymous in CA