Am I the bad guy?

I never thought of myself as the bad guy as I sat staring down at the body of my newest victim. It was one of my younger sister's murderers. A murder that had happened in 2001. My sister had only just turned five the day before her killing. Twenty-three years later I kept telling myself I'd finally getting my own revenge.

Ever since that day she had been killed, I knew I'd get revenge. Though I never preyed on any innocents even with all the opportunities. I kept my anger staged on the group that had planned my sister's murder.

I owed that group a massive debt, though they kept coming back even after it was paid. My only victims were members of that group. The newest one was the person had killed her in cold blood. I stood over the beaten body searching for any more information. But I'm not the bad person for this right? All I wanted was revenge. Am I the bad guy for this....?