<p>The killer of anti-immigration politician Pim Fortuyn said Tuesday he "still hadn't decided" whether the slaying was justified, speaking at a hearing to determine whether his 18-year prison sentence should be changed.</p>
<p>Volkert van der Graaf, a 33-year-old animal rights activist, shot Fortuyn dead on May 6, 2002, throwing Dutch elections into chaos and sparking a year of political instability.</p>