One of the few organizations with a slogan in Esperanto , the IPA 's motto is Servo per Amikeco ( Service through Friendship ) .
The International Police Association ( IPA ) , largest police organization in the world , was formed .
One of the few organizations with a slogan in Esperanto , the police organization 's motto is Servo per Amikeco ( Service through Friendship ) .
The International Police Association ( IPA ) , largest police organization in the world , was formed .