‘Anyone else think the left would sink low enough to do this?’
Ann Coulter devoted a chapter in one of her books to the ‘hate crimes’ that are reported and then shown to be perpetrated by leftists (against themselves). So, yes, the left would do this, because they have a history of doing this.
A guy at the Dingell town hall was seen with a placard appearing to be “anti-healthcare” before meeting, after meeting was handing out pro-Dingell literature.