I'm not sure what you have in mind, but there is definitely a propensity on the left to try to shut down any argument with "that's a right wing position". For example, opposition to CRT was largely a moderate/liberal thing before your average conservative even heard the term, but even then criticism was dismissed with "people who criticize CRT just want to say the N word / get their slaves back / etc". Similarly, conservatives were pretty quick to coin the term "Ferguson Effect" for the pattern of increasing violent crimes in areas that saw large-scale anti-police protests, so naturally academics and the media reflexively dismissed the notion out of hand, but now it seems like crime researchers have largely come around to that viewpoint (to be clear, I'm not criticizing skepticism of conservatives' initial claims, but rather the incurious, out-of-hand dismissal).