The Prophet (ﷺ) said, "Time will pass rapidly, good deeds will decrease, miserliness will be thrown (in the hearts of the people) afflictions will appear and there will be much 'Al-Harj." They said, "O Allah's Apostle! What is "Al-Harj?" He said, "Killing! Killing!"
He was a member of a right extremist political group called "Stram kurs"
And he also posted a lot of videos of him acting mentally unstable on his youtube channel a day ago.
I think he is trying to avoid jail by acting mentally ill.