non toxic players getting banned and toxic players not

Toxic players, I feel are people who instigate and create negative feelings towards others and bring them down. So why is it wrong when a non-toxic player gets upset at that person's words, that they get banned and not the person creating the negative vibe. It makes no sense to punish someone who didn't start the negativity. It makes no sense how you can just agitate people and expect them not to say anything back, were human and anger is a natural emotion and to say you have to control it and just mute is unfair to the players who never say anything back and get flamed and riot just expects us to take the verbal abuse and report them. When they probably won't get banned anyways.