The worst crime ever committed.
Toxic behaviour. It is the worst crime ever done, and known to humanity.
Every human has 99,99% chance to be seriously oversensitive, and have huge depression. Any toxic behaviour around them cause instant suicide.
Each second over 2 million players commit suicide, because of seeing toxic behaviour. So far it caused over 40 trillion death. Surpassing every genocide ever committed.
Finding the mute button requires over 9000IQ. 99,9999% of humanity could never figure it out. Not even if you put into the tutorial, and show a tutorial on loading screen.
But even if you find it you need the combined strength of 6 million lama to press it. It requires so much strength, and determination, that even Flowey from Undertale gets scared. Only 1 from 99 trillion human can do it.
So make sure to report, and Riot should use 110% of the resources, and support team to get rid of toxic behaviour. You sooner beat an enemy with an int. feeder or a true troll in your team, or an enemy with 20 rank above, than pressing the mute.