Charles Saatchi is a man who is famous for being an art collector. This means he really, really likes art and has a lot of it in his collection. He has lots of money and uses it to buy really expensive pieces of art.
Some people call him a "patron of the arts", which means he helps support artists by buying their work or putting on art shows, like a really big fan of a band who goes to all their concerts and buys all their albums.
But Charles Saatchi is also famous for another reason. Many years ago, he was married to a famous artist named Nigella Lawson. They were happy for a while, but then they had some problems and got divorced. During their breakup, there was some controversy because Charles Saatchi was seen putting his hands around Nigella's throat when they were arguing in public.
This is not okay because it's called "domestic violence", which means hurting someone you love. It's against the law and can hurt people a lot, both physically and mentally. Even if Charles Saatchi said he didn't mean to hurt Nigella, it's important to remember that it's never okay to hurt someone, especially not someone you care about.
So, while Charles Saatchi is still known for his love of art, some people also remember him for this bad thing he did. It's important to always treat people with kindness and respect, even if you're feeling angry or upset.