Death Penalty

First off, I don't really know what I'm SUPPOSED to say about the death penalty. Although, there are pros and cons about the death penalty. I, particularly, support the death penalty because if someone is already a serial killer, they should pay the price of what they had done. However, a reason I do not support the death penalty is because if your going to kill someone, for being a murderer, doesn't that make you a murderer/killer as well? What I'm trying to say, specifically, is that, killing people because you or their family wants justice doesn't make you or them a better person. In fact, it makes you or them a murderer as well. 

Regardless of them being accused of being a murderer and all evidence does point to them, what if they did not do it? In addition, it happens a lot. As a result, it makes you a murderer. Not only a murderer of another murderer, but a murderer of an innocent person. Nevertheless, I do believe killers should face serious consequences. Nonetheless, two wrongs, as in two murders, don't make a right. It is not going to bring the person you're trying to get justice for back.