The Norwegian mass killer Anders Behring Breivik told a court on Friday he was basically a “nice person” before he trained himself to control his emotions. He needed this to carry out the attacks, Reuters quoted him as saying. “I was quite normal until 2006 when I started training, when I commenced de-emotionalizing,” he said on the fifth day of his trial. “I\'ve had a dehumanization strategy towards those I considered valid targets so I could come to the point of killing them,” he noted. Breivik keeps insisting he was defending the country against waves of Muslim immigration.