Complex sentence: Nihâl Atsız was a fervent supporter of the Pan-Turkist or Turanist ideology, and an avid sympathizer of Nazism, as he was known to be an open anti-Semite for most of his public life.
Split into simpler sentences: Nihâl Atsız was a fervent supporter of the Pan-Turkist or Turanist ideology, and an avid sympathizer of Nazism. He was known to be an open anti-Semite for most of his public life.