>>5010183People only started learning about their intelligence and social structures thanks to the fact they were put in tiny pools for loud crowds to goggle at them. Before that, their relationship with humans was difficult. They were disliked since they competed for fish with humans. They were also considered potentially dangerous. Whalers hunted them.
Aquariums and orca shows did both a service and a disservice to orcas. They obviously put individual orcas in conditions that were unhealthy for them, but they also changed the public perception of orcas as a species. Scientists learned a whole lot more about orca physiology when they got the chance to study live specimens at a close distance. The general public got to see how smart and awe-inspiring orcas are. They started to care about the well-being of these animals. This change in attitude was integral for ending the support for whaling, and ultimately the orca pools themselves.