As many as 7,000 people turned out Hannover, Germany on Saturday to protest against a rally by the extreme-right NPD.
Police have launched an investigation into the attack that saw the journalist cut 6 centimetres deep in the stomach.
At least one police officer was injured in Berlin on Saturday when around 500 activists shouting "Nazis out" clashed with an equal number of far-right activists marking the 31st anniversary of the prison suicide of Nazi convict Rudolf Hess.
The only surviving member of a trio of neo-Nazis has been sentenced to life in prison for ten murders that shocked Germany
Leftist politicians are blaming far-right for stirring up racist ferver
A neo-nazi walked through an anti-fascist rally and had a surprising reception
Neo-Nazi event at Florida University meets barrage of protests as university criticised for cost of upholding "free speech".