At least 200,000 people gathered in Berlin, Freiburg and Augsburg on Saturday for demonstrations against the Alternative for Germany (AfD) party and the far right, police and organizers said. In Berlin, total strangers locked hands outside the historic Reichstag parliament building, forming a human chain. Police said 150,000 had gathered there on Saturday afternoon. “We are the human firewall,” a voice echoed from the stage. Participants showed their support for democracy and tolerance and said they are against hatred and the far-right AfD. The organizers, an alliance of civil society organiza…