Yes, we have so called Human Rights, but if you are a real man you will do exactly what the 78 year Old did. It is a win win situation, there is a possibility that the old man get killed when the old man didn't act to kill the violent burglar.
For example, let us pivot the story. The old man was killed rather than the burglar, and then the burglar went to other house and kill somebody, again, and then next day another homicide case happen and the culprit was the same burglar again.
now which is right to hear? A violent burglar was killed and it lessen the crime from that place or the burglar continues to do the same crime again and again.
If i were the old man. I will not regret what did he do, rather accept the fact that i killed a violent burglar and i don't care about the laws, atleast i saved myself and my family.
If you let the violent burglar live, and consider human rights then you are selfish.