In this day and age, it's far easier and often far more promising/adaptive to find a solution that goes beyond straight-to-killing.
With how the present system corrupts and directs people, if you killed everyone you thought was a negative influence... you'd still be left with a decadent and despicable world with people likely to take their place. Same corruption, different belief system.

I'm very proud of you. If society had a new or different structure, 'human nature' would arrive at a different outcome.