A Master is a Perpetrator, and A Slave is a Victim.
Eventually the Master will become the Slave and the Slave will become the Master.
A Slave believe's she/he is an animal, and a Master believe's he/she is a hu-man being.
The Master believe's he owns the animals, and the animals believe the Master owns them.
The Master fears the Slaves, because one day he/she will become a slave.
The Slave fears the Master, because one day he/she will eventually become a Master.
Masters and Slaves have the same feelings why they attract each other into their experiences, they are both equally as bad as one another.