Nowadays, Office politics is a Grim reality of every big or small office and promotes negativity at the workplace. Some people indulge in it intentionally, some accidently and some unknowingly......But, more or less it involves almost everyone. 

Personally I feel only your work should speak in your office and nothing else.  Your personal life or issues have no importance or rather no one is actually bothered.  Your boss may act as if he is concerned,  but somewhere he will use it against you

There are many, so called ways in which office politics takes place like, hiding important information from the person you want to let down, backstabbing, backbitting, unnecessarily reprimanding etc.. The list is endless.   One only needs considerable power in favoring those whom one likes and frustrating those against whom one may have a grudge. One only wants to act to further their career without regards to the impact on others around them. This also includes things like taking credit for the ideas of others and putting coworkers down to build themselves up.

Honest hardworking employees are always demoralised and one who is always cajoling the bosses always find good places and pays. No one actually wants to work for the company, it is only to gain control and win the game.

Further I don’t understand why workers and staffs are treated differently.. 

Why is a worker treated as a worker and not as a human being first. Why they are not cordially spoken to? Why are the worker class given a sweet box of Rs. 100 per kg and other staff members Rs. 1000 per kg? Can’t the worker class digest high quality sweets?   Why are the workers given clothes of low quality and others branded ones?? Will the workers get skin infection if they wear good quality clothes.

One spends major time of their day in offices.. why can’t  one have a positive working environment that encourages creativity and innovation, a complete transparency and equality between all the staff, where company helps each employee to nurture their skills, but alas such offices are too difficult to find.

The best way to deal with it is be less emotional with your work. Don't take things personally. The more you have emotions attached to your job, the more you will care for petty things and the more those petty offences will bother you.