This* Tweet violated the Twitter Rules about glorifying violence. However, @Twitter has determined that it will allow terrorists, dictators, and foreign propagandists to abuse its platform.
*Referring to an attached picture of a Khamenei tweet about Palestine
You're thinking the best example is the one that should obviously be removed. But that's not what he's after, because then they'd just remove it. What he wants is something it would be maximally contentious for them to remove.