The sight of pigs packed into a truck on a sweltering day was too much for Anita Krajnc who felt the animals should at least have some water on their journey to the slaughterhouse.
What was meant as a humanitarian gesture has now left Krajnc facing the threat of up to 10 years in a Canadian jail or a potential fine of about C$5000 ($5730).
Today, the latest chapter in what is becoming a global cause celebre for animal rights activists will be played out at a court in Milton, Ontario, when a judge will set a trial date for Krajnc, who has been charged with "criminal mischief". Under Canadian law, pigs are treated as property and can be transported for up to 36 hours without food, water or rest.
That is not good enough for Krajnc, 48, who earns her living as a consultant on a number of animal welfare projects and runs Toronto Pig Save.
The group stands by the roadside in wait for passing pig trucks, and then pokes water and fruit through the slats in the trailer.