Police Unions

Police Unions
Police Unions are widespread within law enforcement agencies now. Not only are law enforcement officers provided with union protection, they also have bargaining rights and employment contracts. In a 1-1.5 page Essay, please respond to the following prompts:

Describe how the development of police unions has changed law enforcement.
How has law enforcement changed with the development of unions
In what ways has it not changed
What benefits and protections are officers afforded from police unions

with references: