I'm pretty sure that shuted up Rat-Haters. Rats are intelligent. Imagine if magawa or another rat saved your life, would you be saying "Rats are ugly" Or would you say "Rats are awesome!" Rats can be nasty, but not all rats are like that. Show some appreciation for them!
I think the orcas are getting the message that people are holding them captive in like whale shows or something and the wanna fight back they are probably tired of people killing them and enslaving them and they are starting to figure it out because they are SUPER smart compared to other Marine Life.