To dream of an Islamic fundamentalist represents a hard-line attitude towards sacrificing all happiness in order to be perfect. People or situations that terrify you for not being super conservative or moral to the extreme. It may also reflect the fear of punishment or consequences for feeling good or being open-minded one time at all. Scary jealousy that anyone else is enjoying freedom.
Negatively, an Islamic Fundamentalist may reflect your own extreme attitude about strict adherence to a personal policy.