German President Frank-Walter Steinmeier called on citizens to defend freedom and democracy during a ceremony marking the entry into force of the country’s constitution and the founding of the modern federal republic 75 years ago. “Our democracy is a resilient one,” Steinmeier said during the speech delivered in Berlin’s government district. “I am certain of one thing: we are living in testing times. Rough, even tougher years lie ahead of us. The answer to this cannot and must not be faint-heartedness or self-doubt.” Steinmeier warned of threats to democracy, such as the threat posed by Russia…