“Here’s the thing: We really support Kyrsten Sinema, we want her to succeed, we want her to be the best senator in the country,” Dan O’Neal, state coordinator for Progressive Democrats of America, told The Republic. “But the way she is voting is really disappointing. We want Democrats to vote like Democrats and not Republicans.”

MORE: Protesters Set American Flag on Fire – Then Get Into All-Out Brawl With Trump Supporters

Progressives such as O’Neal point to her vote to confirm Trump secretary of the Interior nominee David Bernhardt in April. Sinema, one of the few congressional Democrats who declined to sign onto the Save the Internet Act, has also come under fire for her resistance to supporting net-neutrality.

In a July interview, Sinema directly addressed challenges to her progressive bonafides.

“As everyone knows, I am 100 percent focused on the needs of everyday Arizonans, and I refuse to be distracted by the pettiness and the partisanship that has invaded Washington,” she said. “… I promised Arizonans that I would never be a part of that typical Washington chaos and drama and I’m going to continue to stay focused, just like a laser, on the stuff that actually matters to the people in their everyday lives.”

The resistance to Trump intensifies

Ahead of last week’s Democratic primary debate, a group of Greenpeace activists suspended themselves from a Houston bridge to “resist Trump” and protest the oil industry. The protesters were charged with aiding and abetting obstruction of navigable waters and state felony charges of impairing or interrupting operation of a critical infrastructure facility.

In July, police arrested a Georgia woman after she was caught on video barreling her car through a stranger’s barbed wire fence and vandalizing a sign erected in support of Trump’s reelection.

Such displays of anti-Trump resistance have become relatively commonplace. Some critics argue protesters’ disdain for the president has warped their world view.

Last year, therapists indicated a rise in what they unofficially diagnosed as “Trump Anxiety Disorder.”

MORE: Woman Caught on Camera Defacing Trump Campaign Sign – Gets Stuck Trying to Escape

In a 2017 essay, clinical psychologist Jennifer Panning – who is credited with originally coining the term – described the symptoms of “Trump Anxiety disorder” as worrying about the state of the country, feeling helpless and out of control, and spending too much time on social media.