(CNN) Antifa activists could be jailed for up to 15 years for wearing masks under a bill introduced by a US congressman.

If passed, Bill HR 6054 would punish anyone wearing a mask or disguise who "injures, oppresses, threatens, or intimidates" someone else exercising a right guaranteed under the Constitution.

The title of the bill -- "Unmasking Antifa Act of 2018" -- makes it clear that Antifa activists are its intended target, but the bill's text never explicitly mentions them.

The bill, which was introduced by Republican Rep. Dan Donovan of New York last month, has drawn widespread condemnation from critics who claim it unfairly targets Antifa activists, while it could embolden the far-right demonstrators Antifa protests against.

"This is another draconian measure to actually criminalize dissent in the United States," said Scott Crow, a former Antifa organizer and author.