Anti ninja is a team of civilians who hate everey person who has even a little chakra. They are a criminal goup, but they refuse to admit it.
The murder of a hot spring owner
The owner was an old man who had Fire release. He used jutsus to light up the fire to keep the place warm when the people undress/dress up. This group spyed on him and killed him.
This group was created by WhiteCherry .