Justice cannot logically be given to the individual (obviously). Thats why we have law enforcement. We entrust them to make the best decisions for our society as a whole.
>>Is the DP abused and flawed? YES, but that doens't mean its immoral.
I wouldnt say its flawed. It seems to do exactly what its intended to do; Kill people. I'd say its immoral when innocent people die to satisfy the bloodlust of entirely unrelated people.