The correct answer to this open question is the following.
Was there a change in the way trainers felt about the killer whales? Yes, they were.
We are talking about the Orcas documentary "Black Fish," a film directed by Gabrielle Cowperthwaite in 2013. The documentary refers to the way Orcas or Killer Whales are treated in aquariums and parks for entertainment purposes. It focuses on the story of an Orca called Tilikum, who was held captive in Seaworld, Orlando, Florida. After watching the film, the trainers changed the way they feel about Orcas. However, some questioned the way the reporters asked the question, trying to bias the information.