Why should I feel any empathy for whoever raised or willingly married this formerly-breathing POS? I think my empathy is way better spent on the people he continuously discriminated, victimized and oppressed.
As a father, he was advocating for a world where school shootings are a normal, and according to him necessary, occurrence. He believed children as young as 12 should be made to watch public executions. He defended and supported pedophiles. If have any empathy for his children it isn't because he died, but because they had him as a father in the first place.
It's not a matter of having a limited supply. Quite simply I cannot feel any empathy for people who caused their own suffering as a consequence of causing the suffering of millions of others. Anyone who supported and surrounded Charlie Kirk enabled him and most likely shared his opinions, which is just as awful as his direct actions. They fostered the climate that took him away from them. Crocodile tears, FAFO, leopards eating faces, call it whatever you like.