Only 8 or 9? Here in liberal h*ll 10 anti-Bush pro Al-Queda bumper stickers are the minimum. One of these days I’m going snap and start spray painting them.
Don't do that! Just spray their windows with hydrofluoric acid... That'll frost ‘em good! ;)
Oh, I hope you like jail-time, btw. Either will get you there, but the hydrofluoric acid will last a LONG time.