Steven Universe - Volleyball confirmed it, but a lot of people had put 2 and 2 together before this

This is also a punch, where Volleyball said that Pink got her with a scream. Similar to what Steven does when he got angry, as well as what Gem-Steven did to White.

It is nice to get some context for this scene though. It was weird that they decided to have Pink's first appearance showing her getting so angry, then try and establish how she wanted to make everyone happy.

Jesus Fuck, Pink Diamond is becoming less and less likable with each new episode.