Non-sharing of power leads to tyranny of the majority and oppression of the minority, as well as negating the very spirit of democracy. This can be explained in the following points:

1. What is power-sharing?
Power-sharing is a basic principle of democracy, which means that power is shared among different groups in a society. This includes sharing of power between the central and state governments, sharing of power between different political parties, and sharing of power between different communities and groups.

2. Why is power-sharing important?
Power-sharing is important for several reasons. It helps to ensure that all groups in a society have a voice in the decision-making process, and that no group is excluded or marginalized. It also helps to prevent the concentration of power in the hands of a few, which can lead to abuse of power and corruption. Finally, power-sharing is important for maintaining peace and stability in a society, by preventing conflicts and promoting cooperation and trust between different groups.

3. What happens when power is not shared?
When power is not shared, it can lead to several negative consequences. First, it can lead to the tyranny of the majority, where the majority group dominates and oppresses the minority groups. This can result in discrimination, marginalization, and even violence against the minority groups. Second, it can lead to the negation of the very spirit of democracy, where the rights and freedoms of all individuals are not respected and protected. Finally, it can lead to political instability and conflict, as different groups compete for power and resources.

4. Examples of non-sharing of power
There are several examples of non-sharing of power in different parts of the world. For example, in many authoritarian regimes, power is concentrated in the hands of a few individuals or groups, and there is little or no sharing of power among different groups in society. This often leads to human rights abuses, corruption, and political instability. In some democracies, there may be limited sharing of power, where certain groups are excluded or marginalized from the decision-making process. This can lead to social unrest and political conflict.

In conclusion, power-sharing is a crucial aspect of democracy, and non-sharing of power can have serious negative consequences for society. It is important for all groups to have a voice in the decision-making process, and for power to be shared in a fair and equitable manner.