A door and windows are real.
It's idiots like you, who think that businesses, networks, people's entertainment time, and the like "aren't real" that give comfort and encouragement to idiots like the guys who pulled this. They did it to be dicks, just like other dicks might throw a rock through your window and nail your TV right before you were going to watch the World Cup match you've been waiting weeks to watch with your friends. Or, in a closer analogy, waiting until moments before the game starts, and then cutting the cable that services your house or apartment building.
Let me guess: that soccer game's not real! They're not at the stadium in person, so denying them the chance to watch it as they planned isn't actually harmful! Destruction of the time someone plans to use in a certain way is a theft more real, in many ways, than stealing physical objects. You'll never be able to replace the time. Which is one of the reasons these guys are dicks. Deliberate, purposeful, not noble in any way, dicks.