One of my friends used to live across the street from a federal courthouse. He tried projecting a movie from his window onto a blank wall of the courthouse. Hal

One of my friends used to live across the street from a federal courthouse. He tried projecting a movie from his window onto a blank wall of the courthouse. Half an hour later several LEOs were at his door asking him "politely but firmly" to turn off the projector and to never do it again.