This assertion runs counter to the facts
Here’s an article from January 14 about people being sought after and arrested
https://www.cnn.com/2021/01/13/politics/notable-arrests-capitol/index.html
Here’s an article from January 17, 2021, about 125 protestors being arrested: ”More than 125 people have been arrested so far on charges related to the violent insurrection led by supporters of President Donald Trump at the U.S. Capitol, where a Capitol police officer and four others were killed.”
https://apnews.com/article/donald-trump-capitol-siege-alaska-media-riots-709fca95f4e3dce9e40c440d96dcd006
And where did those articles come from?