Vienna, Austria CNN — “This takes us back to the darkest times,” Chief Rabbi Jaron Engelmayer told CNN, as he surveyed piles of destroyed holy books in a blackened and burnt out ceremonial hall. A brutal arson attack on the Jewish cemetery in Vienna on Wednesday left parts of the building close to ruins, pieces of scripture in tatters, and swastikas emblazoned on the walls outside. But the attack stirred up painful memories, too. “It takes us back to times where the books were burned,” Engelmayer said. “It is an attack on the spiritual values of the religion and of...