"There were two smaller and one larger orca," skipper Werner Schaufelberger told the German publication Yacht. "The little ones shook the rudder at the back while the big one repeatedly backed up and rammed the ship with full force from the side." [..]
Experts suspect that a female orca they call White Gladis suffered a "critical moment of agony" -- a collision with a boat or entrapment during illegal fishing -- that flipped a behavioral switch. "That traumatized orca is the one that started this behavior of physical contact with the boat," López Fernandez said. [...]
"We do not interpret that the orcas are teaching the young, although the behavior has spread to the young vertically, simply by imitation, and later horizontally among them, because they consider it something important in their lives," López Fernandez said.
I don't give the White Gladis Militia good odds in this fight, but I wish them luck. Become ungovernable.