Is it permissible to curse evil actions like "dirty politics"?

There is no harm in cursing everything that distracts from obedience to Allah and opposes His servitude, such as the worldly life and what is in it, except for the remembrance of Allah and what is akin to it, and a scholar or a student of knowledge. Islamic politics (governing people according to religion and managing their affairs in accordance with it) is a collective obligation (fard kifaya) and a great deed for whoever purifies their intention. As for un-Islamic politics, which relies on lies, hypocrisy, bad morals, and secular principles, it is among the destructive sins, and cursing it is permissible.