Political Science

Indian polity is a crucial segment of the UPSC Prelims syllabus.
If you take political science as your optional subject, you will study for this optional along with the prelims section thus saving time for other topics. This way you can integrate the UPSC prelims and mains preparation.
Even if you don't have political science as your background, you can easily comprehend and study this subject as it is not too technical. The concepts are general and anyone who reads newspapers on a regular basis would be able to understand and prepare for it.
In the new revised syllabus, the factual parts have been omitted thus an understanding of the concepts is only required to write better answers in this paper.
The notion that the syllabus for political science is vast is only partially true. In fact, a lot of the topics are repeated like Marxism, Marx, Marxist notions of state, Gramsci, etc.
Many topics are interrelated like thoughts of Mill, Bentham and Liberal notions of state, justice and democracy and so on.
Topics such as liberalism, feminism, ideas of Marxism, issues like democracy, human rights, environment, etc. are covered in both Paper I and Paper II.
Knowing a lot of content in this subject can also help in your current affairs preparation.
In the interview round also, a good knowledge of topics in polity such as governance, international relations, etc. can be very handy.

Doing a course in MPA, prepare to serve as the manager in the executive arm of local or state government. To a person who wishes to get into police department, you may write all the examinations of both UPSC as well as State Public Service Commission. By writing the PSC, it will help you to get a job as Deputy Superintendent of Police. One of the options in front of you is to write the Civil Service Examination, and the criteria for it is the age limit. If you prefer to continue with your studies doing PG Diploma in criminology and forensic science is a good option. There are also so many similar courses and they are:-
PG Diploma in criminology and criminalities
PG Diploma in criminology and police science
PG Diploma in criminology and crime administration
PG Diploma in applied criminology
PG Diploma in criminology and penology
Institutes offering criminology courses in India include -
Lok Nayak Jayaprakash Narayan National Institute of Criminology and Forensic Science, Delhi
Punjab University, Chandigarh
Tata Institute of Social Science, Mumbai
University of Madras, Chepauk, Chennai
Utkal University, Bhubaneswar
University of Jammu, Jammu Tawi
University of Lucknow
University of Pune Ganeshkind, Pune

Hi Satakshi,
Let me tell you that after BA, MA would be like an icing on the cake but you have other options like you can go for MBA, LLB and can also go for civil services like UPSC as you have mentioned that your elders asked you to pursue mass communication. Let me tell you that here comes the point of getting confused as students get confused. A student should either listen to what his/her elders say or do what they want. So, let me tell you, do what you like because you have to decide your future what you want to become. It should not be like you listen to elders or someone else and end up taking that and then later realise that you got yourself in a situation where your career goes nowhere. So, it would be better if you calculate it, listen to yourself and do what you want to do.