German President Frank-Walter Steinmeier described the knife attack in which a police officer was fatally injured on market square as a “bloody act of terrorism.” Steinmeier spoke said during a ceremony commemorating the death of police officer Rouven Laur in Mannheim on Friday, attended by many of his colleagues and citizens of the western city. Laur, 29, died in an attack on Sunday, days after he was injured as he sought to intervene when a man attacked several people during a rally by the anti-Islam movement Pax Europa in Mannheim. Steinmeier, state premier Winfried Kretschmann and state in…