There are many honest policemen/women (as well as dishonest ones) but if you are pitted against someone well-connected politically or rich or (usually) both then chances are police is going to side with them and you will probably lose regardless of who is guilty. Unless something extraordinary happens,like you get showcased in the media.
It is not only police. The government machinery on the lowest level is inefficient and corrupt. You need to pay a bribe to get a power connection to your home, a drivers license etc. If you refuse to do so, you will be forced to spent your time in following up, complaining to superiors. It is doable to some extent but you will spent significant amount of your time and energy.
This is my experience in one of the better states in India, which makes me wonder about the rest of the country.