This video says about itself:
Germany: ‘Anti-Nazi’ couple suffer suspected arson attack
13 August 2015
The barn of Birgit and Horst Lohmeyer, known anti-Nazi critics and activists, was set on fire in the village of Jamel in northern Germany, Thursday. The fire broke out overnight on August 12-13, with reports suggesting an unknown male was in the area at the time of the incident.
Translated from NOS TV in the Netherlands:
Three men have been convicted to 12 to 14 years in prison, because last year in Velp they have thrown a fire bomb into a house. A Slovak man and woman who were in the house were seriously injured; they got burn injuries all over their bodies.
The bomb-throwers knew that besides the Slovak couple, there were more immigrant workers in that house.