Mushroom cloud over Prague

From boingboing:

Like many European TV channels the state-owned CT2 broadcasts live panorama / weather streams from popular recreation areas in its morning programme, fully automated 30 second pans per site with music in the background. Initiative Ztohoven, a collective around Roman Tyc, somehow managed to inject a pre-recorded pan with a sudden atomic explosion in the midst of a beautiful countryside. No word how they did it, assume they tricked the cabling on the unmanned camera site. Tyc also replaced traffic light icons in Prague with illustrations of drunk, pissing or ranting figures a few months ago.