What I find interesting in short points:

• there is 13 km of razor wire around the meetingplace
  
• police continued pursuing leftists
  
• in the end courts forced through that protests can take place 200 m from the meeting-place
  
• Merkel, the SPD boss and even interior minister Schäuble were forced to make public announcements, in which they 'greeted' demonstrators (as showing interest in the questions discussed at the summit) but warned against violence
  
• there is no public info at any planned violence
  
• meanwhile, one SPD leader(!) called the protest bans unconstitutional
  
• Apparently as a consequence of this ruckus, Attac Germany gained another very prominent member -- Heiner Geißler, a former CDU top secretary! (And not a man ever accused of leftist leanings.)
  
• Even private media discussed a material by Attac that analysed corporate tax reform plans (set up by SPD minister Steinbrück...) as corporate welfare only hurting small business.