The proof is everywhere, on live TV, streamed on the internet, every day. Not seeing that is the only way anyone could claim to not see any proof. There are countless sources showing live the horrors unfolding, as they happen. This time, we can't claim there is no evidence of atrocity being carried out.

Anyhow, the proof will all come out in the pudding.

https://johnwight1.medium.com/the-south-african-government-emerges-as-a-moral-giant-over-gaza-de5fd565dd25

More also here, with even a link to the court documents:

https://medium.com/@wlockett/south-africas-case-against-israel-is-so-much-more-than-you-think-220cf7e13bd8