Negro Matapacos (translated as Black Cop-Killer)[1] was a riot dog that participated in the 2011–2013 Chilean student protests in Santiago, Chile.

He has had graffiti and statues made in his honor throughout the country and even outside of Chile, such as in the Decolonize This Place subway protests in New York City in 2019.

[5] Although Negro Matapacos was considered a stray dog, due to its presence in different university headquarters and streets of Santiago, he was under the care of María Campos, who adopted him in 2009 and who fed him, had a bed for him in her residence, tied his handkerchiefs around his neck, and blessed him before he went out.

During his participation in street demonstrations, several media outlets also called him the "Chilean Loukanikos", due to his similarities with the dog that became famous during the protests in Greece between 2010 and 2012.

[10] Tributes have also been made outside of Chile, such as in Japan on November 14, 2019, where the statue of Hachikō outside Shibuya station in Tokyo was adorned with a red handkerchief, similar to that worn by Negro Matapacos.