For three days and counting, protesters in Portland, Oregon have gathered at a local bookstore to demand that it stop selling a new book critical of Antifa.

"Far-left activists surrounded Powell's Books in Portland on Monday and demanded the store stop selling Unmasked: Inside Antifa's Radical Plan to Destroy Democracy, a book about antifa written by Andy Ngo," Reason's Robby Soave reports. "The protests forced the store to close early."

Ngo, the editor-at-large of The Post Millennial, a Canadian conservative news site, has documented the activities of Antifa, a leftist group that advocates violence in the name of fighting fascism. The journalist was beaten by Antifa activists at a rally in 2019, leaving him with a serious brain injury.

An #antifa protester outside @Powells Books explains that stopping the release of my upcoming book would be like stopping the historical publication of Hitler's "Mein Kampf." pic.twitter.com/8NVTtQwYNz

— Andy Ngô (@MrAndyNgo) January 11, 2021