The attack against the Dortmund bus was carried out by a German Russian so he could make money of Dortmund's stock.... On the day of the attack he purchased 15,000 put options over the internet for shares in Borussia Dortmund. These would have entitled him to sell shares later at a predetermined price. He also checked into the hotel on the day of the attack with a room where he had a view on the attack. http://www.bbc.com/news/world-europe-39664212
The guy seriously commited a terrorist attack just so he could make a few thousand Euros.