Washington (CNN) On Friday, Elizabeth Warren embraced the ethos of the moment: anger.

"Over and over, we are told that women are not allowed to be angry. It makes us unattractive to powerful men who want us to be quiet," the 2020 Democratic presidential candidate wrote in a campaign email. Her message also underscored the role of power -- "those who have it, and those who don't plan to let go of it."

Warren continued: "Well, I am angry and I own it. I'm angry on behalf of everyone who is hurt by Trump's government, our rigged economy, and business as usual. And we can translate this anger into real change -- if we all fight side by side."

This was presumably the Massachusetts senator's response to rebukes from rivals this week.