An afternoon in Stockholm

It seemed like an ordinary day. 
Until a stolen truck came rushing
   straight into the crowd of people.

How to comprehend what  precede 
   when a human being choose to kill?
What if we could all be close long before, 
   to be a friend to each and one of them 
   who need support. 
What if we then could prevent 
such a sadly choice that was made today.. 
Stockholm Town Hall, Photo from February 2017