A confession letter posted on a left-wing internet platform said that recent arson-sparked fires on Germany’s rail infrastructure were meant to “disrupt the capitalist routine.” Police in Bremen said on Saturday they were working to verify the authenticity of the letter posted on Indymedia. Cable ducts were set alight in the northern city of Bremen on Monday and in the German capital on Friday, significantly impacting local, long-distance and freight traffic. Thousands of passengers were affected. German rail operator Deutsche Bahn does not expect operations in the Berlin region to be back to …