According to the organizers of Wednesday's event, Monday's attack will not divide Berlin.
I asked some people who throw the word around a lot. Neither radicals nor white supremacists got it right.
A mother who lost her son in Syria tells us how she's trying to stop other families suffering the same fate.
Some hate him for his rhetoric, while others cheer the Republican nominee as the surest way to see America bite the dust.
One study found that people who repeatedly viewed footage of deadly events were more traumatized than those who had witnessed the events in real life.
A German government report recommends keeping ten days' worth of food, just in case something terrible happens. But what would you take?
Amid a deluge of terrorist attacks abroad and mass shootings at home, American parents are doing what they can to keep their kids safe without inciting panic.
The 24-year-old was killed while plotting a suicide bomb attack, according to police.
"If I didn't know what happened yesterday, I wouldn't be able to guess just from the behaviour of the people around me."
Gerd Reimann is an emergency psychologist, who counsels survivors of terror attacks like those in Nice and Würzburg.
A massive population of marginalized immigrants and an overwhelmed security apparatus are a recipe for disaster.