Note how the headline and the first part of the article scream anarchist terror. News publishers understand that readers scan the headlines and decide what to read. And very often when they do read something they will only read the first part. In this article we only get a rebuttal at the end, wherein one finds the truth.
http://www.swissinfo.ch/eng/swiss_news/Violent_anarchist_groups_go_global.html?cid=30165586
For a some background on the issue and specifically on the two FAIs, read my article:
http://www.countercurrents.org/fryett030411.htm
For a longer examination of political violence, read Emma Goldman:
http://sunsite.berkeley.edu/goldman/Writings/Anarchism/violence.html