Every time there is a major protest or football (soccer) game in Germany, facebook and twitter and everything else is full of messages regarding major police pr

Every time there is a major protest or football (soccer) game in Germany, facebook and twitter and everything else is full of messages regarding major police presence. It's the protesters or fans warning each other, it's the local residents warning each other, oh, and the police itself is often an avid user of facebook and twitter itself warning people to avoid certain areas if there is violence to help regular citizens avoid getting caught up in it. The vast majority of people do not post or read those messages to coordinate violence against the police, but merely to stay out of the way when police and black block protestors or football hooligans clash. I live near a football stadium, and there are some violent clashes of drunk hooligans and police after many games, but thankfully usually only on a small scale involving maybe 10-30 people against the police. Nonetheless, I made it a habit to avoid certain area for a couple of hours after a home game.