Professional dilemma

There are things which are politically correct, then there are some which are technically correct but most dangerous are those which are politically correct and technically incorrect. As an engineer it is always desirable from me that I should deliver things that are technically correct but at the same time the political correctness is also required.
Sometimes it becomes difficult to cope with such situations where reputation of someone is at stake. Now the question arises, what is the correct way : Doing justice to the engineering profession or doing justice to the relations that you have developed over a period of time or doing justice to your personal benefits watever may be the outcome.
If I see around there are many people who show that they are working for the product or doing justice with the profession but internally they have motives that are devestating for the culture and not in the best interest of the product.
And no doubt these people can rise to higher positions and handle much more sophisticated things but wat worries me is the fact that whether with time those people going to change??
If the answer is no then the situation is alarming and I m worried with the evolution of this new trend of opportunitism.