In a tweet on 22 December 2021, Weishaupt called on the police to use pepper spray and batons against a "Querdenker" demonstration in Munich. The demonstration had been cancelled by the organisers. Nevertheless, up to 5,000 participants gathered. Eleven arrests were made. In response to Weishaupt's tweet, the hashtag #SchlagstockSaskia trended on Twitter, with predominantly right-wing criticism from AfD member of parliamentJürgen Braun, among others. Police unionist Manuel Ostermann from Münsterland also criticised Green politician Weishaupt's tweet: "I dread to see you take responsibility. Arm yourself rhetorically. It's obviously about time." Weishaupt deleted her tweet and apologised, saying she "unfortunately had not been able to present the context in the tweet."