lipscomb police chief warren carey was trying to arrest mayor lance mcdade , who refused to leave his office when the fight broke out .
mcdade is currently in jail for resisting arrest and assaulting police officer .
mayor was holding a letter that would have placed all city employees , with the exception of dispatch , on paid administrative leave .
mcdade has been arrested before for domestic violence and for obstructing the government process at the scene of a fire .