Own it! Anger is absolutely gendered, you're right. We've repressed our anger for ages in the name of sexism, I'm suprised we're not the ones punching walls. Not that we should! But anger is an authentic emotion that nobody should repress, especially when we look at how many reasons there currently are for some of us to go completely bonkers right now.
Angry women threaten the patriarchy because angry women are the ones who have always gotten sh*t done in terms of progression. Of course they want us to doubt our feelings!