Did Parks work in the silent film era of Hollywood?
No, he worked in the sound era of Hollywood.
Yes, he was a pioneer of the silent era
No, he only worked as a film critic
Yes, he began as a silent film actor before transitioning to sound
Answer
No, Parks worked in the sound era of Hollywood. He was born in 1912 and died in 1994. The silent film era ended in the early 1930s, so Parks would have been too young to have worked in that era.
Picturing Excellence: Unmasking the Genius of Gordon Parks