Can We Still Call Erdinc Tekir an ‘Activist’?

The Jerusalem Post picks up on a report in Hurriyet that one of the Mavi Marmara "activists," Erdinc Tekir, previously served time in prison for hijacking a Black Sea ferry.

Chechen supporters seized the Avrasya in 1996, holding more than 200 passengers hostage. The four-day stand-off ended peacefully.

Is is still fair to describe Tekir as an "activist?"