Freeway Flag - Display Of Patriotism Or Graffiti?

KTVU SUNOL, CAlif. -- "Interstate 680, in and out of the Silicon Valley, is one of the bay area's busiest freeways. And everyday for the last eight and half years there was a hillside mural motorists passed on the Sunol grade. "It just made me feel really patriotic, just seeing it everyday," said motorcyclist Dave Freely.
"Until Wednesday, motorists saw a 35 foot mural of the American flag painted on a concrete retaining wall.
"On Thursday, it was just gray concrete painted over by Caltrans."