My guess is: nothing! First I find it strange to read in newspapers abroad of alledged "anti-Semitic" events which have never been covered by over-sensitive German medias. Then I notice the old trick to mingle criticism of Israeli official actions such as the Gaza war with "anti-Semitism". If those snipers would use the term "anti-Jewish", the camouflage would blow up.
NYT: U.S. Vice President Joe Biden considering run for 2016 presidency (Reuters)
from the article: What is stirring a new strain of anti-Semitism in Germany?