Video uploaded on social media shows activists bombarding Arizona Sen. Kyrsten Sinema as liberals have recently expressed growing frustration with the centrist Democrat over her opposition to an economic agenda largely supported by her fellow party members.

The progressive group Living United For Change in Arizona uploaded a video showing at least two activists following Sinema into the bathroom at Arizona State University on Saturday. Sinema became an adjunct professor at the school in 2003, according to ASU’s webpage.