Just a Tip of The Iceberg -[Some of The Corruption Caused By Those Who Seek and Desperately Crave For Leadership in The Earth]
In The Name of Allaah, The Most Merciful, The Bestower of Mercy
Imaam Ibnul Qayyim (rahimahullaah) said:
Its seekers hasten to obtain it in order to achieve their goals – (in order) to be exalted in the earth; the hearts (of the people) subdued to them, incline towards them and aid them in all their goals, whilst they are exalted above them. This pursuit of leadership brings about corruption, such as rebellion, envy, transgression, enmity, oppression, trials, being ardent in defending oneself at the expense of violating the rights of Allaah, exalting those despised by Allaah and belittling those honoured by Allaah.
[Source Ar-Rooh page: 487-489. Slightly paraphrased]