What is meant by power & politics in organization?Does politics and bias create insecurity among employees ?

In social science and politics, power is the ability to influence or control the behavior of people. The term authority is often used for power perceived as legitimate by the social structure. Power can be seen as evil or unjust, but the exercise of power is accepted as endemic to humans as social beings. 

•  Most managers have natural tendencies to hoard resources and build empires to gain more control power and status within the organization. 
• Most managers play territorial games. They will resist or delay change, if they do not fully understand the impact on their territory
• If the manager does not agree with the plans, he or she is  more likely to play passive-aggressive games 
•  Some managers will sabotage the leader’s plan, if it threatens their interest
• The higher the stake for the manager, the higher the risk of unethical political behavior