Rep. Alexandria Ocasio-Cortez responded to Sen. Joe Manchin after he said the New York Democrat focuses on tweeting more than “anything else,” amid a feud over defunding the police.

“I find it amusing when politicians try to diminish the seriousness of our policy work, movement organizing & grassroots fundraising to ‘she just tweets,’ as though ‘serious’ politics is only done by begging corporate CEOs for money through wax-sealed envelopes delivered by raven,” Ocasio-Cortez tweeted Tuesday evening.