Kalista's lore exalts the committing of suicide to attain vengeance to teens. That is not good.
It is incredibly thoughtless of the writer to put this content out for teenagers across the globe. The last high school shooting we had consisted of the Prom King getting vengeance for someone dating his girlfriend.
Most people that play this game are teenagers. Yes, teens have a brain and can make choices for themselves but why romanticize the idea of suicide for vengeance? Like, WTF is anyone thinking at Riot? How do you put out a champion with THAT lore in THIS country?
In addition, the main character in the lore is not believable at all. Someone that knows voodoo and believes in the afterlife doesn't just relinquish spending eternity with loved ones over spending eternity with lulz-psycho-killer-that-is-also-very-noble-and-nice. It does not compute.