Attacks on staff at Charlie Hebdo and shoppers at a kosher supermarket in Paris this month have left Europe stunned and uneasy. Many felt, while they mourned, that this type of attack could happen again.
Then it did. Only two days after the satirical magazine's two main attackers were killed Jan. 9, the office of the Hamburger Morgenpost in Germany was firebombed. The paper was attacked for publishing satirical cartoons of the Prophet Muhammad. Security forces throughout Europe are on alert for further attacks.