Attack at Christmas market in French city kills 3, wounds 12

The understatement of the day from the Associated Press: 

STRASBOURG, France – A man who had been flagged as a possible extremist sprayed gunfire near the city of Strasbourg’s famous Christmas market Tuesday, killing three people, wounding 12 and sparking a massive manhunt. France immediately raised its terror alert level.

You think that he may be an extremist? 

Or just possibly an extremist. 

What else would he need to do to be an actual extremist?